Top Call Center Services & Voice Services in Bulgaria

Ratings Updated: August 24, 2026

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31 Companies

Country: Bulgaria

List of the Top Bulgaria Call Center Companies & Voice Services

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What are Featured Providers?
Simply Contact

4.8 26 reviews

Verified

$1,000+

< $25 / hr

250 - 999

Serves Bulgaria

Services provided

35% Call Center Services

55% Customer Service Outsourcing

10% Back Office Outsourcing

Simply Contact is a distinguished provider of Contact Center Services and Customer Support Services, recognized for managing inbound and outbound customer interactions across multiple languages and channels. Reviews highlight their expertise in delivering exceptional service, with 100% of clients noting impressive project management and communication. Approximately 90% of reviews emphasize their ability to enhance customer satisfaction and streamline support systems, underscoring their reliability and adaptability.

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Reviews mention Adaptable
Simply Contact has received positive feedback for their adaptability across various projects. Clients noted their ability to quickly understand and adjust to specific needs, as highlighted by one CEO who praised their responsiveness and flexibility in addressing challenges. Another client emphasized their impressive ability to tailor solutions, demonstrating a proactive approach to service delivery. Overall, the sentiment reflects strong satisfaction with Simply Contact's adaptability, contributing to effective project outcomes and enhanced customer satisfaction.

Customer Service Outsourcing for Authentication Solutions Co

5.0 Oct 18, 2023

Simply Contact showcased outstanding project management throughout our collaboration. Every phase, from initiation to execution, was handled with utmost precision and efficiency. Their responsiveness and adaptability were commendable; they were quick to tailor their approaches to meet our specific needs and challenges. Regular updates and transparent communication ensured we were always informed and confident in the progress being made.
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12 of 15 Call Center Services reviews are 5 stars

$200,000 – $999,999 avg. project cost

Call Center Services PROJECT HIGHLIGHT

Call Center Staffing for Government Helpline
5.0 — Simply Contact provides staff to a government hotline's team; they hire and train call center agents to cover workflows around the clock. They've organized the hotline's IT structure, monitoring, Read more
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Industry Experience

Simply Contact has demonstrated strong capabilities across various industries, including Information Technology, Financial Services, Education, Advertising & Marketing, and others. Reviews indicate a consistent ability to enhance customer support processes, improve satisfaction rates, and provide multilingual assistance. Clients praised their adaptability, project management, and quick onboarding of agents. Overall, sentiment is positive, particularly in IT, education, and marketing sectors, suggesting that Simply Contact is well-suited for projects requiring efficient customer service solutions.
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Software Business services Information technology Financial services Education Arts, entertainment & music Retail Hospitality & leisure Human Resources IT Services Telecommunications Advertising & marketing

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Average Project Cost Breakdown

$10,000 to $49,000 (6) $1,000,000 to $9,999,999 (4) $50,000 to $199,999 (3)

What Clients Have Said
Clients generally express satisfaction with Simply Contact's cost-effectiveness and value for money, highlighting their competitive pricing and quality of service. For instance, one client noted they received 'good value for cost' while another emphasized that their pricing 'fit our budget.' However, some reviews also mentioned room for improvement in their pricing strategy. Overall, the sentiment is positive, with many clients appreciating the balance between affordability and service quality.
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SupportYourApp

4.8 87 reviews

Premier Verified

$1,000+

< $25 / hr

1,000 - 9,999

Serves Bulgaria

Services provided

30% Call Center Services

30% Customer Service Outsourcing

20% AI Agents +2 services

15% Back Office Outsourcing

5% Data Annotation Services

SupportYourApp is a customer service center specializing in Contact Center Services, providing comprehensive solutions including Customer Support Services, Phone Support, and Telephonic Support. Across various reviews, clients praised their efficiency and adaptability, with many noting their proactive approach and commitment to client schedules. Approximately 90% of reviews highlighted their ability to handle high volumes of customer inquiries effectively.

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Reviews mention Openness
The client expressed a highly positive sentiment regarding Openness, highlighting the consistently positive and transparent communication with SupportYourApp. They noted the team's adaptability to changing needs and their proactive approach in managing personal development plans for consultants. Overall, the feedback emphasizes a strong and open line of communication, with no suggested areas for improvement, indicating a high level of satisfaction with the company's responsiveness and willingness to meet client requirements.

Call Center Services for Education Company

4.5 May 19, 2023

Weekly check-in meetings enabling our team and SYA to discuss issues, work through resolutions, ensure alignment, and provide clarifications, updates, and guidance on appropriate response to a variety of user questions and issues. Communication is open and dynamic. In general, SupportYourApp continues to ask for and seek ways to improve their service and support.
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5 of 8 reviews are 5 stars

1 new review for Call Center Services services

Less than $10,000 avg. project cost

Reviewed 8 times in the past 6 months
In the last six months, client feedback for SupportYourApp has been predominantly positive, highlighting effective communication, responsiveness, and adaptability. For instance, one client noted the successful handling of increased support requests and consistent delivery, while another emphasized the seamless integration of SupportYourApp's team with their internal operations. However, one review expressed significant dissatisfaction due to a lack of accountability and efficiency, indicating areas for improvement. Overall, clients appreciate the company's commitment to operational excellence and customer satisfaction.
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More responsive than most other service providers

SupportYourApp is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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United States (25) Ukraine (7) Israel (6) England (5) Germany (3) Netherlands (3) Czech Republic (2) Denmark (2) Sweden (2) Ireland (2) Luxembourg (1) Poland (1) Austria (1) Malta (1) Greece (1) New Zealand (1) Norway (1) Italy (1) Russia (1) France (1) Switzerland (1) Costa Rica (1) Canada (1) Bahamas (1)

This provider is fluent in 31 languages:

English

Spanish

Arabic

Bengali

Hindi

Russian

Portuguese

Japanese

German

Korean

French

Turkish

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This provider is available in 33 time zones:

Colombia Time (COT)

Near East Time (NET)

Middle East Time (MET)

China Taiwan Time (CTT)

Gulf Standard Time (GST)

Brazil Eastern Time (BET)

Greenwich Mean Time (GMT)

Japan Standard Time (JST)

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Hugo Inc.

5.0 28 reviews

Verified

$1,000+

< $25 / hr

1,000 - 9,999

Serves Bulgaria

Services provided

20% Call Center Services

25% Customer Service Outsourcing

15% Back Office Outsourcing +4 services

10% Content Moderation Services

10% Data Annotation Services

10% Finance & Accounting Outsourcing (FAO)

10% Sales Outsourcing

Hugo Inc. | Top CX Provider is a distinguished company specializing in Contact Center Services, offering comprehensive Customer Support Services across various channels such as email, chat, and phone. The client reviews highlight their adaptability and efficiency, with 100% positive feedback on their seamless integration and ability to enhance customer engagement capabilities, resulting in impressive metrics like a 99.8% accuracy in order processing and fulfillment.

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3 of 3 Call Center Services reviews are 5 stars

$50,000 – $199,999 avg. project cost

Call Center Services PROJECT HIGHLIGHT

Call Center Services for Automotive Company
5.0 — Hugo manages all incoming communications across multiple channels, including email, chat, and WhatsApp. The team works to expand call center operations for outbound calls and improve reach. Read more
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Industry Experience

Hugo Inc. has received positive feedback across various industries, including Financial Services, eCommerce, Automotive, Information Technology, Gaming, Media, and Advertising & Marketing. Clients commend their expertise in enhancing customer support, streamlining operations, and driving revenue growth. In Financial Services, they excel at global customer experience management; in eCommerce, they improve back-office efficiency. Their adaptable project management and commitment to quality have resulted in measurable outcomes such as increased transaction volume and improved customer satisfaction, making them a reliable partner for businesses seeking growth and operational excellence.
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Media Information technology Financial services eCommerce Food & Beverages Automotive Environmental Services Advertising & marketing Gaming Software

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Average Project Cost Breakdown

$50,000 to $199,999 (7) $200,000 to $999,999 (6) $10,000 to $49,000 (2)

What Clients Have Said
Clients consistently commend Hugo Inc. for providing excellent value for money, noting that their services align well with project costs. For instance, a CMO highlighted Hugo's 'good value for cost' in scaling customer experience infrastructure, while a Head of Finance remarked on their 'great culture fit' and 'good value for cost.' Overall, the sentiment reflects satisfaction with the pricing relative to the quality and impact of services delivered, reinforcing Hugo's reputation as a cost-effective partner.
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United States (9) Kenya (3) France (1) Netherlands (1) United Arab Emirates (1) England (1)

This provider is fluent in 54 languages:

Mandarin

English

Spanish

Arabic

Bengali

Hindi

Russian

Portuguese

Japanese

German

Javanese

Korean

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This provider is available in 38 time zones:

Colombia Time (COT)

Near East Time (NET)

Middle East Time (MET)

China Taiwan Time (CTT)

Gulf Standard Time (GST)

Brazil Eastern Time (BET)

Greenwich Mean Time (GMT)

India Standard Time (IST)

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Simply Contact

4.8 26 reviews

Verified

$1,000+

< $25 / hr

250 - 999

Serves Bulgaria

Services provided

35% Call Center Services

55% Customer Service Outsourcing

10% Back Office Outsourcing

Simply Contact is a distinguished provider of Contact Center Services and Customer Support Services, recognized for managing inbound and outbound customer interactions across multiple languages and channels. Reviews highlight their expertise in delivering exceptional service, with 100% of clients noting impressive project management and communication. Approximately 90% of reviews emphasize their ability to enhance customer satisfaction and streamline support systems, underscoring their reliability and adaptability.

See all 26 projects
Reviews mention Adaptable
Simply Contact has received positive feedback for their adaptability across various projects. Clients noted their ability to quickly understand and adjust to specific needs, as highlighted by one CEO who praised their responsiveness and flexibility in addressing challenges. Another client emphasized their impressive ability to tailor solutions, demonstrating a proactive approach to service delivery. Overall, the sentiment reflects strong satisfaction with Simply Contact's adaptability, contributing to effective project outcomes and enhanced customer satisfaction.

Customer Service Outsourcing for Authentication Solutions Co

5.0 Oct 18, 2023

Simply Contact showcased outstanding project management throughout our collaboration. Every phase, from initiation to execution, was handled with utmost precision and efficiency. Their responsiveness and adaptability were commendable; they were quick to tailor their approaches to meet our specific needs and challenges. Regular updates and transparent communication ensured we were always informed and confident in the progress being made.
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12 of 15 Call Center Services reviews are 5 stars

$200,000 – $999,999 avg. project cost

Call Center Services PROJECT HIGHLIGHT

Call Center Staffing for Government Helpline
5.0 — Simply Contact provides staff to a government hotline's team; they hire and train call center agents to cover workflows around the clock. They've organized the hotline's IT structure, monitoring, Read more
Read 15 Reviews

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Industry Experience

Simply Contact has demonstrated strong capabilities across various industries, including Information Technology, Financial Services, Education, Advertising & Marketing, and others. Reviews indicate a consistent ability to enhance customer support processes, improve satisfaction rates, and provide multilingual assistance. Clients praised their adaptability, project management, and quick onboarding of agents. Overall, sentiment is positive, particularly in IT, education, and marketing sectors, suggesting that Simply Contact is well-suited for projects requiring efficient customer service solutions.
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Software Business services Information technology Financial services Education Arts, entertainment & music Retail Hospitality & leisure Human Resources IT Services Telecommunications Advertising & marketing

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Average Project Cost Breakdown

$10,000 to $49,000 (6) $1,000,000 to $9,999,999 (4) $50,000 to $199,999 (3)

What Clients Have Said
Clients generally express satisfaction with Simply Contact's cost-effectiveness and value for money, highlighting their competitive pricing and quality of service. For instance, one client noted they received 'good value for cost' while another emphasized that their pricing 'fit our budget.' However, some reviews also mentioned room for improvement in their pricing strategy. Overall, the sentiment is positive, with many clients appreciating the balance between affordability and service quality.
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MarKam Solutions

5.0 9 reviews

Premier Verified

$1,000+

< $25 / hr

50 - 249

Sofia, Bulgaria

Services provided

30% Call Center Services

20% Customer Service Outsourcing

20% IT Managed Services +2 services

20% Sales Outsourcing

10% Back Office Outsourcing

MarKam Solutions is a prominent provider of Call Center Services, excelling in Customer Support and Phone Support. With 100% positive feedback, clients consistently praise their cost efficiency and exceptional project management, noting their adaptability and communication skills. Approximately 40% of reviewers highlight MarKam Solutions' alignment with company values, while 60% emphasize their data-driven and innovative approach.

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Reviews mention Proactive
Clients consistently highlight MarKam Solutions' proactive approach and effective communication. One client noted their 'clear and proactive' communication with regular updates, while another emphasized their 'exceptional project management' and ability to adapt swiftly to evolving needs. This responsiveness has led to improved outcomes, including a 50% increase in lead generation and efficient project execution. Overall, feedback reflects a strong sentiment towards MarKam's proactive engagement, which significantly enhances collaboration and results.

Sales Outsourcing & Lead Gen for Advertising Account Co

5.0 Feb 13, 2025

MarKam Solutions demonstrated exceptional project management throughout our collaboration. They maintained clear timelines, delivered every milestone on schedule, and proactively communicated progress at each stage. Their team was highly responsive, adapting quickly to our feedback and evolving priorities. Whenever new needs arose, they acted with agility — offering practical solutions, strategic insights, and a hands-on approach that ensured smooth execution and consistent results.
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Back Office Outsourcing for Creative Agency

5.0 Nov 5, 2025

They managed the project efficiently, delivering all tasks and deliverables on time. Communication was clear and proactive, with regular progress updates and performance reports. Their structured approach made coordination easy and ensured deadlines were consistently met.
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5 of 5 Call Center Services reviews are 5 stars

1 new review for Call Center Services in past 6 months

$50,000 – $199,999 avg. project cost

Call Center Services PROJECT HIGHLIGHT

Call Center Services for Logistics & Supply Chain Company
5.0 — MarKam Solutions provides outsourcing services for a logistics and supply chain company. The team is tasked with improving customer satisfaction, implementing new tech, and reducing operational Read more
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Average Project Cost Breakdown

$50,000 to $199,999 (3) $10,000 to $49,000 (1) $200,000 to $999,999 (1)

What Clients Have Said
Clients consistently praised MarKam Solutions for their competitive pricing and excellent value for money. One client highlighted that their pricing fit the budget while providing a 'good value for cost.' Another noted a 35% decrease in labor costs while meeting sales goals, emphasizing affordability without sacrificing quality. Overall, feedback reflects strong satisfaction with cost-effectiveness, suggesting that MarKam Solutions delivers substantial value relative to their fees.
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United States (4) Bulgaria (3) England (1)

This provider is fluent in 10 languages:

Arabic

English

Dutch

German

Romanian

Spanish

Swedish

Russian

Portuguese

Italian

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Mercatus

4.8 23 reviews

Verified

$5,000+

< $25 / hr

50 - 249

Sofia, Bulgaria

Services provided

10% Call Center Services

50% Customer Service Outsourcing

20% Sales Outsourcing +2 services

10% Back Office Outsourcing

10% IT Staff Augmentation

Mercatus is a Contact Center Services company specializing in lead generation, cold calling, and customer support services. Their reviews highlight a strong performance in communication and organization, with 75% of feedback emphasizing responsiveness and efficient project management. While their cold calling services are consistently praised, 25% of reviewers noted areas for improvement in LinkedIn campaigns. Overall, clients appreciate Mercatus' ability to deliver on their objectives effectively.

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1 of 1 reviews is 5 stars

Unknown avg. project cost

Reviewed 1 time in the past 6 months
In the last six months, client feedback for Mercatus has been overwhelmingly positive. A recent review highlighted their effective B2B lead generation strategy, resulting in nine qualified meetings within four weeks and an impressive 89% meeting acceptance rate. Clients praised the team's professionalism, structured approach, and ability to tailor outreach to specific needs. The reviewer noted a reliable partnership with consistent results, indicating that Mercatus is a strong fit for projects requiring targeted marketing solutions.
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2 of 4 Call Center Services reviews are 5 stars

Less than $10,000 avg. project cost

Call Center Services PROJECT HIGHLIGHT

Call Center Services for Engineering Company
4.0 — Mercatus provided call center services to help an engineering company acquire new leads. The team was tasked with setting up appointments with potential clients. Read more
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Industry Experience

Mercatus has demonstrated expertise across various sectors including Information Technology, Retail, Manufacturing, and Financial Services. Clients consistently praise their effectiveness in lead generation and customer outreach, highlighting impactful campaigns particularly in B2B contexts. The overall sentiment reflects a strong appreciation for their project management, communication, and adaptability, with notable success in enhancing visibility and engagement in the markets they serve. Companies in need of targeted lead generation strategies, especially in IT and retail, would find Mercatus a suitable partner.
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Financial services Information technology Consulting IT Services Engineering Retail Consumer Products Construction Manufacturing Human Resources Software eCommerce

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Average Project Cost Breakdown

Less than $10,000 (11) $10,000 to $49,000 (5) $50,000 to $199,999 (2)

What Clients Have Said
Clients generally express satisfaction with Mercatus's value for money, noting that their pricing aligns well with budgets while delivering quality outcomes. One CEO highlighted the "good value for cost," and another remarked on the "fair" pricing despite a desire for lower costs. Overall, feedback indicates that clients perceive Mercatus as a reliable partner that effectively meets their lead generation needs, with investment returns being realized within a year in some cases.
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Hypergen

5.0 15 reviews

$5,000+

$50 - $99 / hr

10 - 49

Sofia, Bulgaria

Services provided

50% Sales Outsourcing

25% CRM Consulting and SI

15% Conversion Optimization +1 service

10% Email Marketing

Hypergen is a lead generation company specializing in cold email outreach and demand generation. The company consistently receives positive feedback, with 100% of reviewers praising their professionalism, responsiveness, and ability to deliver on promises. Themes across reviews include effective lead generation, impressive project management, and a collaborative approach, with clients reporting significant improvements in lead quality and conversion rates.

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Reviews mention Great project management
Clients consistently commend Hypergen for their exceptional project management capabilities. One client highlighted the stellar management led by Nelly, noting their agility and responsiveness to changing campaign needs. The team demonstrated a strong understanding of the client's business, contributing to over 300 qualified leads and a positive ROI. Overall, the sentiment reflects a high level of satisfaction with Hypergen's ability to deliver results effectively and adaptively.

Lead Gen & Cold Email Campaign for Digital Mktg Agency

5.0 Jun 6, 2024

The project management, led by Nelly, was stellar. They were very agile and responsive, able to pivot in and out of new campaign ideas quickly. They understood our business and needs very well.
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Industry Experience

Hypergen has demonstrated expertise across several industries, notably Advertising & Marketing, Chemicals & Biotechnology, IT Services, Software, Real Estate, and Design. Clients praised their ability to generate qualified leads, effective cold email campaigns, and outstanding project management. Feedback highlights their professionalism, creativity, and responsiveness, with strong results in lead generation and sales. Overall, Hypergen is well-suited for businesses seeking impactful marketing strategies in these sectors.
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Advertising & marketing Chemicals & Biotechnology IT Services Software Design Business services Real estate Consumer Products

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Average Project Cost Breakdown

$10,000 to $49,000 (7) Less than $10,000 (4) $50,000 to $199,999 (2)

What Clients Have Said
Clients consistently commend Hypergen for their excellent value for money, highlighting the cost-effectiveness of their services. One client noted that Hypergen's pricing fit their budget while delivering significant results, including a 5x ROI. Another client emphasized the 'good value for cost' and the professional execution that exceeded expectations, resulting in over 300 qualified leads. Overall, sentiment is overwhelmingly positive, with many clients expressing satisfaction with the financial return relative to their investment.
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United States (8) Bulgaria (3) Canada (2) Israel (1) Romania (1)

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Euroccor JSC

4.5 1 review

$1,000+

$25 - $49 / hr

50 - 249

София, Bulgaria

Services provided

65% Call Center Services

15% Customer Service Outsourcing

10% Sales Outsourcing +1 service

10% Social Media Marketing

Euroccor JSC is a company specializing in Contact Center Services, particularly focusing on Customer Support Services such as listing quality checks. The overall feedback is positive, with clients appreciating their exceptional attention to detail and effective workflow. One client noted significant time savings, although there is a suggestion for even faster service delivery.

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0 of 1 Call Center Services reviews are 5 stars

Unknown avg. project cost

Call Center Services PROJECT HIGHLIGHT

Listing Quality Services for Job Searching Platform
4.5 — Euroccor JSC provides listing quality services for a job searching platform. Read more
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Industry Experience

Euroccor JSC has demonstrated strong expertise in the Human Resources sector, specifically in the area of listing quality checks for online job boards. Feedback highlights their exceptional attention to detail and effective communication, which have led to significant time savings for clients. The overall sentiment in this industry is positive, indicating that Euroccor is a reliable partner for HR-related projects.
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Human Resources

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Average Project Cost Breakdown

What Clients Have Said
Clients have generally reported that Euroccor JSC offers good value for money, particularly noting their efficiency in saving time during projects. One client highlighted the company's attention to detail as exceptional, which contributes positively to their perceived value. However, there is a suggestion for improvement regarding the speed of service, indicating room for enhancement in their overall responsiveness. Overall, the sentiment reflects satisfaction with the cost relative to the quality of services provided.
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Lukanoff Consulting Ltd

4.9 8 reviews

$1,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Services provided

30% Sales Outsourcing

20% Direct Marketing

20% Email Marketing +2 services

20% Marketing Strategy

10% Account-Based Marketing

Lukanoff Consulting Ltd specializes in Contact Center Services, with a strong focus on lead generation and booking sales meetings. The company consistently receives positive feedback for its efficient customer support services, with 100% of reviewers praising their professionalism and timely delivery. Clients particularly value their cultural alignment and adaptability.

See all 8 projects

1 of 1 Call Center Services reviews are 5 stars

1 new review for Call Center Services in past 6 months

$10,000 – $49,000 avg. project cost

Call Center Services PROJECT HIGHLIGHT

Direct Marketing & Sales Outsourcing for ERP Platform
5.0 — Lukanoff Consulting Ltd provides lead generation, B2B marketing, and sales meeting booking services for a cloud ERP platform. The team generates meetings through phone calls in targeted markets. Read more
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Industry Experience

Lukanoff Consulting Ltd has demonstrated expertise across various industries including Financial Services, Software, Publishing, Advertising & Marketing, IT Services, and Business Services. Clients commend their ability to generate leads, implement effective marketing strategies, and provide personalized solutions. The feedback highlights strong project management, timely delivery, and a proactive approach, resulting in measurable success such as increased sales and new business opportunities. Overall, the sentiment is highly positive, indicating a strong fit for clients seeking growth in these sectors.
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Financial services Software Publishing Advertising & marketing IT Services Business services

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Average Project Cost Breakdown

$10,000 to $49,000 (3) Less than $10,000 (2)

What Clients Have Said
Clients consistently praise Lukanoff Consulting Ltd for their value and cost-effectiveness. One client noted a flexible pricing approach that accommodated their budget, while another highlighted a successful campaign resulting in €12,000 in revenue from a single lead. Overall, feedback indicates that Lukanoff Consulting not only meets but exceeds expectations in terms of deliverables and project management, providing significant returns on investment and high satisfaction with their services.
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Bulgaria (5) England (1)

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ScaleRush

5.0 2 reviews

Undisclosed

Undisclosed

10 - 49

Sofia, Bulgaria

Services provided

80% Sales Outsourcing

20% Email Marketing

ScaleRush is a lead generation and sales outsourcing company known for its customized pipelines and tailored outreach strategies. They receive overwhelmingly positive feedback, with clients highlighting their proactive project management and deep industry knowledge. Approximately 100% of the reviewers mentioned over-delivering on results, such as increasing sales pipelines by 50% within two months.

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Industry Experience

ScaleRush has demonstrated expertise in the construction and gaming industries, receiving positive feedback for their proactive communication and deep industry knowledge. In construction, they significantly improved sales pipeline and appointment rates. In gaming, they exceeded lead generation expectations, achieving a higher closing rate than usual. Overall sentiment indicates that ScaleRush excels in delivering customized solutions and fostering strong client relationships, making them a suitable partner for businesses in both sectors.
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Gaming Construction

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Average Project Cost Breakdown

$10,000 to $49,000 (1)

What Clients Have Said
Clients have highlighted ScaleRush's strong value for money, noting that the company delivers impressive results relative to their costs. One client emphasized that ScaleRush provided 'good value for cost' and exceeded expectations by increasing sales pipelines significantly. Another client mentioned spending $15,000 and receiving over 120 leads in just 60 days, which far surpassed their usual closing rates. Overall, feedback indicates a positive sentiment regarding cost-effectiveness and the quality of service provided.
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Bulgaria (1) Switzerland (1)

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PowerSellers

5.0 2 reviews

$10,000+

Undisclosed

2 - 9

Sofia, Bulgaria

Services provided

15% Call Center Services

60% Sales Outsourcing

25% Market Research

PowerSellers specializes in Contact Center Services, focusing on lead generation and customer relationship management. The company has successfully contacted 57% more clients and generated 72% more leads annually. Their commitment to customer support and responsiveness is highlighted by their availability and proactive approach, although there is room for improvement in patience during peak times.

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Reviews mention Easy to reach
Clients have consistently praised PowerSellers for their exceptional accessibility and responsiveness. One client noted, "They are always ready to attend to any need," highlighting their commitment to communication. Additionally, the client's feedback emphasized the team's availability and eagerness to work, reinforcing an overall positive sentiment regarding ease of reach. This suggests that PowerSellers prioritizes client engagement and is effective in maintaining open lines of communication throughout the project.

Call Center Services for Energy Solutions Provider

5.0 Apr 1, 2024

Excellent, they are always ready to attend to any need. The availability and desire to work of each one of them. Virtual Meeting, Email or Messaging App.
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Industry Experience

PowerSellers has demonstrated strong expertise in the Food & Beverage and Energy & Natural Resources industries. Clients appreciate their effective communication and responsiveness, particularly in managing relationships and generating leads. In the Food & Beverage sector, they successfully procured renewable energy certificates, while in the Energy sector, they facilitated increased client engagement and lead generation. Overall sentiment is positive, highlighting their flexibility, value for cost, and commitment to client success, making them a strong candidate for projects in these industries.
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Food & Beverage Energy & natural resources

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Average Project Cost Breakdown

$10,000 to $49,000 (1) $200,000 to $999,999 (1)

What Clients Have Said
Clients consistently highlight PowerSellers' competitive pricing and strong value for money. For instance, one client noted that their pricing 'fit our budget' and provided 'good value for cost.' Another client echoed this sentiment, stating that PowerSellers' pricing was a key reason for their selection, emphasizing their ability to deliver results while maintaining affordability. Overall, the sentiment regarding cost and value is highly positive, with no significant complaints noted.
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More responsive than most other service providers

PowerSellers is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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Zadarma

4.0 1 review

Undisclosed

Undisclosed

50 - 249

Burgas, Bulgaria

Services provided

100% Call Center Services

Zadarma is a digital services company specializing in VoIP solutions with CRM integration. Reviews highlight their responsive support and ability to deliver on time, with 100% of feedback noting their good value for cost and functionality. While their guidance could be more personalized, their overall service is highly regarded.

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0 of 1 reviews is 5 stars

$50,000 – $199,999 avg. project cost

Reviewed 1 time in the past 6 months
Recent reviews of Zadarma indicate a strong overall sentiment, highlighting their responsiveness and effective project management. Clients appreciated the company's ability to deliver a complex cloud-based VoIP solution integrated with CRM on time. One client noted the good value for cost and high responsiveness, while suggesting that more personalized support could enhance their experience. Overall, Zadarma is viewed positively for its capabilities in managing digital services.
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Industry Experience

Zadarma has demonstrated expertise primarily in the Advertising & Marketing industry, providing effective VoIP solutions with CRM integration. Clients highlight their responsive support and ability to deliver projects on time, emphasizing the company's strong value for cost. Overall sentiment in this industry is positive, indicating that potential clients seeking seamless digital services and integration would find a beneficial partnership with Zadarma.
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Average Project Cost Breakdown

$50,000 to $199,999 (1)

What Clients Have Said
Clients have expressed positive sentiments regarding the overall cost and value for money offered by the company. One review specifically highlighted Zadarma's 'good value for cost,' emphasizing satisfaction with the pricing relative to the services provided, such as VoIP with CRM integration. Additionally, timely delivery and responsive support further enhance the perceived value, although some clients suggested a desire for more personalized support to complement the cost-effectiveness.
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CXG Business Process Outsourcing

5.0 1 review

Undisclosed

Undisclosed

50 - 249

Sofia, Bulgaria

Services provided

24% Call Center Services

25% Customer Service Outsourcing

21% Back Office Outsourcing +2 services

15% Recruiting

15% Staffing

CXG Business Process Outsourcing is a specialized BPO company known for its efficiency in scaling teams to manage shared services, AI training, and data analytics. Reviews highlight their professionalism, effective collaboration, and adaptability, with a 100% positive feedback rate. Clients appreciate their ability to backfill positions swiftly, ensuring seamless service delivery.

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Industry Experience

CXG Business Process Outsourcing has demonstrated strong expertise in the Software industry, particularly in managed and shared services for a SAAS company in Business Spend Management. The firm's strengths include rapid resource ramp-up, effective team integration, and AI training for invoice processing and data classification. Clients express satisfaction with CXG's professionalism and collaborative approach, resulting in seamless service delivery and team support. Overall, CXG is well-suited for clients in the Software sector seeking agile and efficient outsourcing solutions.
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Software

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Average Project Cost Breakdown

$200,000 to $999,999 (1)

What Clients Have Said
Clients generally perceive CXG Business Process Outsourcing as offering strong value for money. One client noted that CXG's pricing was competitive compared to IT-focused service providers, highlighting their specialization in BPO. The swift ramp-up of resources and the ability to fill positions quickly were also praised, emphasizing the cost-effectiveness of their services. Overall, the sentiment reflects satisfaction with both the cost and the quality of service provided.
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InfoSource Bulgaria Ltd

4.5 2 reviews

$1,000+

< $25 / hr

10 - 49

Sofia, Bulgaria

Services provided

20% Call Center Services

20% Back Office Outsourcing

20% Document Digitization & Management +3 services

20% Recruiting

10% Customer Service Outsourcing

10% Finance & Accounting Outsourcing (FAO)

InfoSource Bulgaria Ltd is a data management and analysis company specializing in extracting and structuring information from financial and executive reports. The company is consistently praised for its cost-effectiveness, attention to detail, and responsive project management. Approximately 100% of reviewers highlighted their satisfaction with the quality of service and customer-focused approach.

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Reviews mention Efficient
Clients have consistently highlighted InfoSource Bulgaria Ltd's efficiency in project execution. One reviewer noted that the company completed their project with 'required precision and data accuracy.' Additionally, the cost-effectiveness and attention to detail were praised as remarkable. Regular communication, including weekly touchpoint calls, further enhanced the workflow, contributing to a positive overall sentiment regarding their efficiency.

Data Curation for Talent Sourcing Platform

4.0 Jul 26, 2022

The project was completed with the required precision and data accuracy, demonstrating their efficiency. We maintained a structured workflow with weekly touchpoint calls and necessary communication over Skype, which contributed to the project's smooth progression.
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Industry Experience

InfoSource Bulgaria Ltd has demonstrated expertise primarily in the Media and Software industries. Clients in the Media sector praised their responsiveness, quality, and alignment with company values, resulting in successful data analysis of financial reports. In the Software industry, they were recognized for precision and attention to detail in manual curation projects, particularly in talent intelligence. Overall, client sentiment reflects satisfaction with cost-effectiveness and proactive communication, making them a strong option for companies in these fields.
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Software Media

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Average Project Cost Breakdown

$50,000 to $199,999 (1)

What Clients Have Said
Clients have consistently praised InfoSource Bulgaria Ltd for their cost-effectiveness and overall value for money. One client highlighted that their pricing fit the budget and provided good value, emphasizing their focus on customer satisfaction and high-quality service at fair prices. Another review specifically noted the company's remarkable cost-effectiveness and attention to detail, affirming their ability to deliver precision and accuracy in their work.
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Passion4Growth

4.9 9 reviews

$1,000+

$50 - $99 / hr

2 - 9

Breznik, Bulgaria

Services provided

30% Business Consulting

30% Sales Outsourcing

20% Account-Based Marketing +1 service

20% Market Research

Passion4Growth is a lead generation and business development company that excels in enhancing client portfolios and expanding market presence through strategic partnerships and digital outreach. Their reviews reflect a 100% positive sentiment, highlighting effective communication, timely delivery, and proactive engagement. Approximately 83% of reviewers praised the company's innovative approach and personalized strategies, emphasizing their commitment to client success and growth.

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Reviews mention Timely
Overall sentiment regarding the timeliness of Passion4Growth's services is highly positive. Clients consistently noted prompt communication and timely delivery of project milestones. For instance, one client emphasized that their 'communication was fast and really easy to follow' and that services were provided within promised timeframes. Another client highlighted the 'fantastic synchronicity' with timely responses and structured project management. Such feedback indicates that Passion4Growth effectively meets deadlines and addresses client needs promptly.

Outsourced Sales, Email & Lead Gen Mktg for Marketing Co

5.0 Nov 13, 2024

We experienced fantastic synchronicity with their team. The work was enjoyable and dynamic, with communication that was timely, prompt, and sufficient.
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Lead Generation Services for IoT Monitoring Company

5.0 Oct 24, 2025

The communication with their team was fast and really easy to follow. They responded really fast and provided their services in the promised timeframes.
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Social Media Marketing for Branding & Design Studio

4.5 Oct 27, 2025

Their project management was smooth and reliable. Deliverables were provided on time, and communication was clear throughout the process. I felt supported and that my needs were understood and addressed promptly.
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Industry Experience

Passion4Growth has demonstrated significant expertise across multiple industries, including Software, Advertising & Marketing, Telecommunications, IT Services, and Human Resources. Clients consistently praised their proactive communication, strategic approach, and ability to deliver measurable results, such as increased leads and client acquisition. The overall sentiment is positive, highlighting their strengths in lead generation and sales pipeline management, making them particularly suitable for companies seeking growth in tech-focused and service-oriented sectors.
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Advertising & marketing Telecommunications IT Services Human Resources Software Design

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Average Project Cost Breakdown

$10,000 to $49,000 (3) Less than $10,000 (2)

What Clients Have Said
Clients consistently highlight Passion4Growth's competitive pricing and strong value for money. For instance, one CEO noted that their pricing 'fit our budget' and provided 'good value for cost.' Another client emphasized the company's 'great culture fit' and the overall perception of high quality relative to their expenses. Overall, feedback reflects a positive sentiment regarding the affordability of services, with many clients expressing satisfaction with the outcomes achieved for the investment made.
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ODEON msc - A TTC brand

Not yet reviewed

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% Call Center Services

20% Finance & Accounting Outsourcing (FAO)

20% HR Consulting +5 services

10% Accounting

10% Back Office Outsourcing

10% Business Consulting

10% Customer Service Outsourcing

10% Sales Outsourcing

Established in 2019, ODEON msc - A TTC brand is a Finance & Accounting Outsourcing (FAO) company. The team offers Finance & Accounting Outsourcing (FAO) and HR Consulting.
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Expand Acquisition

Not yet reviewed

Undisclosed

Undisclosed

2 - 9

Sofia, Bulgaria

Services provided

50% Email Marketing

50% Sales Outsourcing

Expand Acquisition is an Email Marketing and Sales Outsourcing company. They are based in Sofia, Bulgaria and have small team of experts. Their services include Email Marketing and Sales
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Customer Care BG Ltd.

Not yet reviewed

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

100% Call Center Services

Call center service Customer Care BG Ltd. Is located in Sofia, Bulgaria. Their services include Call Center Services.
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Sixty K Ltd

Not yet reviewed

$50,000+

< $25 / hr

1,000 - 9,999

Sofia, Bulgaria

Services provided

10% Call Center Services

80% Customer Service Outsourcing

10% Back Office Outsourcing

Sixty K Ltd is a large Customer Service Outsourcing company. Founded in 2008, the team focuses on Customer Service Outsourcing and Back Office Outsourcing.
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Mellon Bulgaria

Not yet reviewed

$1,000+

< $25 / hr

50 - 249

Sofia, Bulgaria

Services provided

25% Call Center Services

25% HR Outsourcing

25% Other Application Development +2 services

15% Custom Software Development

10% Mobile App Development

Call center service Mellon Bulgaria was established in 2001. The midsize team provides Call Center Services and HR Outsourcing.
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Euro Connect

Not yet reviewed

$1,000+

$25 - $49 / hr

2 - 9

Sofia, Bulgaria

Services provided

40% Call Center Services

40% Customer Service Outsourcing

20% Sales Outsourcing

Euro Connect is a small phone answering service in Sofia, Bulgaria. The team offers Call Center Services and Customer Service Outsourcing.
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BPO Bulgaria

Not yet reviewed

$1,000+

$25 - $49 / hr

2 - 9

Plovdiv, Bulgaria

Services provided

25% Call Center Services

25% Accounting

25% Customer Service Outsourcing +1 service

25% Tax Law

Phone answering service BPO Bulgaria was established in 2014. The small team specializes in Call Center Services and Accounting.
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Virtuwise

Not yet reviewed

$1,000+

< $25 / hr

10 - 49

Varna, Bulgaria

Services provided

20% Branding

20% Business Consulting

20% Digital Strategy +2 services

20% Email Marketing

20% Sales Outsourcing

Launched in 2023, Virtuwise is a branding firm. The company specializes in Branding and Digital Strategy, and is small.
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Varna, Bulgaria

Morska Sirena str. 27, office 2
Varna, Bulgaria 9002
10 - 15

+359885918045

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Customer Umbrella

5.0 20 reviews

$1,000+

< $25 / hr

250 - 999

Varna, Bulgaria

Services provided

10% Call Center Services

10% Back Office Outsourcing

10% Content Moderation Services +7 services

10% Customer Service Outsourcing

10% Data Annotation Services

10% Employer of Record (EOR) Services

10% PEO/Employee Leasing

10% Recruiting

10% Sales Outsourcing

10% Staffing

Customer Umbrella is a proficient provider of Contact Center Services, excelling in Customer Support Services, Inbound and Outbound Call Center, and Telephonic Support. Reviewers consistently praise their professionalism and seamless integration into client operations, with 100% positive feedback highlighting their outstanding customer service and effective communication. Their expertise in call handling and proactive problem-solving significantly enhances client satisfaction and operational efficiency.

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3 of 4 Call Center Services reviews are 5 stars

Less than $10,000 avg. project cost

Call Center Services PROJECT HIGHLIGHT

Customer Support Outsourcing for Game Development Company
5.0 — Customer Umbrella provides customer support services for a game development company. The team is in charge of addressing any customer queries and concerns across various platforms (e.g., email, live Read more
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Industry Experience

Customer Umbrella has demonstrated versatility across various industries, including Gambling, Gaming, Manufacturing, Utilities, Retail, and Healthcare. Feedback highlights their strengths in improving customer support efficiency, enhancing operational workflows, and delivering tailored solutions. The overall sentiment is highly positive, with clients praising their adaptability, professionalism, and integration into existing teams. Potential clients in these sectors can expect exceptional service and impactful collaboration when engaging with Customer Umbrella.
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Gaming Design Healthcare Software Gambling Manufacturing Utilities Retail

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Average Project Cost Breakdown

$10,000 to $49,000 (9) Less than $10,000 (2)

What Clients Have Said
Client feedback on Customer Umbrella highlights a consistent sentiment of good value for money and budget-friendly pricing. Clients appreciated the alignment of pricing with their budgets and noted that the services provided exceeded their expectations. One client mentioned, "Pricing fit our budget" and another praised the "good value for cost," reinforcing the company's reputation for delivering quality service at competitive rates. Overall, the feedback indicates a strong satisfaction with the cost-effectiveness of their offerings.
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United States (5) Cyprus (2) Germany (2) Canada (1) England (1)

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Instorm

Not yet reviewed

$5,000+

$200 - $300 / hr

2 - 9

Sofia, Bulgaria

Services provided

50% Corporate Training & Coaching

30% Business Consulting

20% Sales Outsourcing

Launched in 2018, Instorm is a Corporate Training & Coaching company. The team provides Corporate Training & Coaching and Business Consulting and is based in Sofia, Bulgaria.
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Orpheus Solutions

5.0 1 review

$5,000+

$25 - $49 / hr

2 - 9

Sofia, Bulgaria

Services provided

25% Call Center Services

30% Corporate Training & Coaching

25% Business Consulting +2 services

10% Finance & Accounting Outsourcing (FAO)

10% HR Consulting

Orpheus Solutions is a digital marketing consulting firm recognized for its innovative approach and profound expertise in digital marketing strategies. The company has received 100% positive feedback, with clients praising their effective workflow and impressive creativity. Reviewers consistently highlight their reliability and ability to provide new perspectives, with no areas noted for improvement.

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Industry Experience

Orpheus Solutions has demonstrated expertise in the Arts, Entertainment, and Music industry, particularly in enhancing marketing strategies. Clients appreciate their innovative approach and extensive knowledge in digital marketing, resulting in effective collaboration and promising project trajectories. Overall sentiment is positive, indicating strong potential for companies within similar sectors seeking to optimize marketing channels and improve ROI.
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Arts, entertainment & music

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Average Project Cost Breakdown

Less than $10,000 (1)

What Clients Have Said
Clients express a positive sentiment regarding the value for money provided by Orpheus Solutions, highlighting their effective consulting services in digital marketing. One client noted the company's impressive creative insights and strategic approach, indicating a strong reliance on their expertise. Although specific financial outcomes were not yet available, the client emphasized their satisfaction and confidence in the company's ability to maximize return on investment, suggesting that the pricing aligns well with the quality of service offered.
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eTel Digital Agency

Not yet reviewed

Undisclosed

Undisclosed

50 - 249

Sofia, Bulgaria

Services provided

20% E-Commerce Development

20% Email Marketing

20% Sales Outsourcing +3 services

20% Social Media Marketing

10% Search Engine Optimization

10% Web Design

Social media marketing firm eTel Digital Agency was founded in 2001. The midsize team specializes in Social Media Marketing and Email Marketing.
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Squaretalk

Not yet reviewed

$1,000+

Undisclosed

50 - 249

Sofia, Bulgaria

Services provided

20% Call Center Services

80% Unified Communications Consulting & SI

Launched in 2010, Squaretalk is an unified communications consulting & SI company. The midsize team provides unified communications consulting & SI and Call Center Services.
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Sofia, Bulgaria

133 Todor Aleksandrov blvd
Sofia, Bulgaria 1309
10 - 15

+35924916130

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Logicall Bulgaria AD

Not yet reviewed

$1,000+

$25 - $49 / hr

2 - 9

Serdica, Bulgaria

Services provided

100% Call Center Services

Logicall Bulgaria AD, an answering service company, was established in 2007. The company specializes in Call Center Services.
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Alba Center

Not yet reviewed

$1,000+

$25 - $49 / hr

2 - 9

Sofia, Bulgaria

Services provided

50% Call Center Services

25% Customer Service Outsourcing

25% Sales Outsourcing

Alba Center, a small phone answering service, is headquartered in Sofia, Bulgaria. The team focuses on Call Center Services and Sales Outsourcing.
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Inter Contact Bulgaria

Not yet reviewed

$1,000+

$25 - $49 / hr

2 - 9

Sofia, Bulgaria

Services provided

100% Call Center Services

Answering service Inter Contact Bulgaria is headquartered in Sofia, Bulgaria. They focus on Call Center Services and were launched in 2006.
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Latiane Ltd

Not yet reviewed

Undisclosed

Undisclosed

50 - 249

Balsha, Bulgaria

Services provided

60% Call Center Services

40% Recruitment Process Outsourcing

Latiane Ltd, a midsize telephone answering service, is in Balsha, Bulgaria. Their services include Call Center Services and Recruitment Process Outsourcing.
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Callhalla

Not yet reviewed

$1,000+

$25 - $49 / hr

2 - 9

Sofia, Bulgaria

Services provided

50% Call Center Services

50% Customer Service Outsourcing

Callhalla, an answering service and Customer Service Outsourcing company, was established in 2014. The small team offers Call Center Services and Customer Service Outsourcing.
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MarketStar Bulgaria

5.0 28 reviews

$25,000+

Undisclosed

1,000 - 9,999

Sofia, Bulgaria

Services provided

75% Sales Outsourcing

20% Product Marketing

5% Direct Marketing

MarketStar Bulgaria, a provider of Contact Center Services, excels in offering Customer Support Services and Call Handling solutions. Reviews highlight their dedication, attention to detail, and structured approach. Approximately 90% of feedback is positive, with clients praising their process management and telephonic support. However, some noted initial challenges with industry familiarization due to team juniority.

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2 of 2 Call Center Services reviews are 5 stars

Less than $10,000 avg. project cost

Call Center Services PROJECT HIGHLIGHT

Outbound Sales Calling for Fintech Company
5.0 — Out2Bound is an ongoing partner of a fintech company that assists in all aspects of their sales efforts, including lead database management, email strategy, scriptwriting, and lead generation. Read more
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Industry Experience

MarketStar Bulgaria has demonstrated significant expertise across various industries, including Financial Services, IT, and Other sectors. Clients have praised their strong sales strategy development, lead generation, and customized training programs. Feedback indicates a positive impact on sales processes, enhanced team skills, and overall revenue growth. Their adaptive approach and deep understanding of client needs contribute to high satisfaction levels, making them a suitable partner for organizations seeking to improve their sales effectiveness in technology and financial domains.
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Select Industry to see insights

Design Healthcare Advertising & marketing Business services Financial services IT Services Information technology Software

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Average Project Cost Breakdown

Less than $10,000 (15) $10,000 to $49,000 (9) $200,000 to $999,999 (2)

What Clients Have Said
MarketStar Bulgaria has received positive feedback regarding their overall cost and value for money. Clients frequently highlight the 'good value for cost' as a key reason for selecting them over competitors. For example, one client noted their 'great culture fit' and 'high ratings' contributed to their decision. Overall, the sentiment reflects satisfaction with the pricing relative to the quality of services provided, emphasizing their effectiveness in delivering results while maintaining affordability.
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Bulgaria (21) France (2) Switzerland (2) Luxembourg (1) Netherlands (1)

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MarketStar

Not yet reviewed

Undisclosed

Undisclosed

1,000 - 9,999

Sofia, Bulgaria

Services provided

65% Sales Outsourcing

15% Customer Service Outsourcing

10% Digital Strategy +1 service

10% Marketing Strategy

MarketStar is a Sales Outsourcing company. Established in 1988, the firm is in Ogden, Utah and Dublin, Ireland. Their services include Sales Outsourcing and Customer Service Outsourcing.
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Sofia, Bulgaria

bulevard "Cherni vrah"
Sofia, Bulgaria 1415
201 - 250

359 89 593 6318

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Rollover to see company insights or click a company below for more details.

1 MarKam Solutions

2 Mercatus

3 Hypergen

4 Euroccor JSC

5 Lukanoff Consulting Ltd

6 ScaleRush

7 PowerSellers

8 Zadarma

9 CXG Business Process Outsourcing

10 InfoSource Bulgaria Ltd

11 Passion4Growth

A Clutch Leaders Matrix provides a broad view of the top-performing companies in a particular service or location. Each company featured in a Leaders Matrix is evaluated based on Focus and Ability to Deliver. The size of each circle indicates that company’s size.

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Ability to Deliver considers three criteria:

Client feedback and reviews
Work experience and previous projects
Market presence and reputation in the industry

List of the Top 11 Bulgaria Call Center Companies & Voice Services

MarKam Solutions

$1,000+

< $25 / hr

50 - 249

Sofia, Bulgaria

Ability to deliver

32.6/40.0

17.6/20 Reviews

10/10 Clients & Experience

5/10 Market Presence

Service focus

30% Call Center Services

20% Sales Outsourcing

50% Other

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Mercatus

$5,000+

< $25 / hr

50 - 249

Sofia, Bulgaria

Ability to deliver

32.1/40.0

16.6/20 Reviews

9.8/10 Clients & Experience

5.7/10 Market Presence

Service focus

10% Call Center Services

20% Sales Outsourcing

70% Other

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Hypergen

$5,000+

$50 - $99 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

25.4/40.0

16.6/20 Reviews

3.7/10 Clients & Experience

5.2/10 Market Presence

Service focus

50% Sales Outsourcing

50% Other

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Euroccor JSC

$1,000+

$25 - $49 / hr

50 - 249

София, Bulgaria

Ability to deliver

22.9/40.0

14.6/20 Reviews

3/10 Clients & Experience

5.3/10 Market Presence

Service focus

65% Call Center Services

10% Sales Outsourcing

25% Other

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Lukanoff Consulting Ltd

$1,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Ability to deliver

28.2/40.0

16.2/20 Reviews

8/10 Clients & Experience

4/10 Market Presence

Service focus

30% Sales Outsourcing

70% Other

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ScaleRush

Undisclosed

Undisclosed

10 - 49

Sofia, Bulgaria

Ability to deliver

20.8/40.0

16.8/20 Reviews

0/10 Clients & Experience

4/10 Market Presence

Service focus

80% Sales Outsourcing

20% Other

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PowerSellers

$10,000+

Undisclosed

2 - 9

Sofia, Bulgaria

Ability to deliver

20.4/40.0

16.4/20 Reviews

0/10 Clients & Experience

4/10 Market Presence

Service focus

15% Call Center Services

60% Sales Outsourcing

25% Other

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Zadarma

Undisclosed

Undisclosed

50 - 249

Burgas, Bulgaria

Ability to deliver

19.8/40.0

13.4/20 Reviews

0/10 Clients & Experience

6.4/10 Market Presence

Service focus

100% Call Center Services

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CXG Business Process Outsourcing

Undisclosed

Undisclosed

50 - 249

Sofia, Bulgaria

Ability to deliver

25/40.0

16.2/20 Reviews

3.9/10 Clients & Experience

4.9/10 Market Presence

Service focus

24% Call Center Services

76% Other

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InfoSource Bulgaria Ltd

$1,000+

< $25 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

25.2/40.0

14.8/20 Reviews

5.5/10 Clients & Experience

4.9/10 Market Presence

Service focus

20% Call Center Services

80% Other

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Passion4Growth

$1,000+

$50 - $99 / hr

2 - 9

Breznik, Bulgaria

Ability to deliver

24/40.0

16.6/20 Reviews

2.8/10 Clients & Experience

4.6/10 Market Presence

Service focus

30% Sales Outsourcing

70% Other

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ODEON msc - A TTC brand

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

8.2/40.0

0/20 Reviews

3.6/10 Clients & Experience

4.6/10 Market Presence

Service focus

10% Call Center Services

10% Sales Outsourcing

80% Other

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Expand Acquisition

Undisclosed

Undisclosed

2 - 9

Sofia, Bulgaria

Ability to deliver

4/40.0

0/20 Reviews

0/10 Clients & Experience

4/10 Market Presence

Service focus

50% Sales Outsourcing

50% Other

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Customer Care BG Ltd.

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

100% Call Center Services

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Sixty K Ltd

$50,000+

< $25 / hr

1,000 - 9,999

Sofia, Bulgaria

Ability to deliver

5.3/40.0

0/20 Reviews

0/10 Clients & Experience

5.3/10 Market Presence

Service focus

10% Call Center Services

90% Other

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Mellon Bulgaria

$1,000+

< $25 / hr

50 - 249

Sofia, Bulgaria

Ability to deliver

4/40.0

0/20 Reviews

0/10 Clients & Experience

4/10 Market Presence

Service focus

25% Call Center Services

75% Other

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Euro Connect

$1,000+

$25 - $49 / hr

2 - 9

Sofia, Bulgaria

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

40% Call Center Services

20% Sales Outsourcing

40% Other

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BPO Bulgaria

$1,000+

$25 - $49 / hr

2 - 9

Plovdiv, Bulgaria

Ability to deliver

4.9/40.0

0/20 Reviews

0/10 Clients & Experience

4.9/10 Market Presence

Service focus

25% Call Center Services

75% Other

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Virtuwise

$1,000+

< $25 / hr

10 - 49

Varna, Bulgaria

Ability to deliver

4.6/40.0

0/20 Reviews

0/10 Clients & Experience

4.6/10 Market Presence

Service focus

20% Sales Outsourcing

80% Other

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Customer Umbrella

$1,000+

< $25 / hr

250 - 999

Varna, Bulgaria

Ability to deliver

27.8/40.0

16.8/20 Reviews

6.1/10 Clients & Experience

4.9/10 Market Presence

Service focus

10% Call Center Services

10% Sales Outsourcing

80% Other

View Profile Visit Website
Instorm

$5,000+

$200 - $300 / hr

2 - 9

Sofia, Bulgaria

Ability to deliver

4.6/40.0

0/20 Reviews

0/10 Clients & Experience

4.6/10 Market Presence

Service focus

20% Sales Outsourcing

80% Other

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Orpheus Solutions

$5,000+

$25 - $49 / hr

2 - 9

Sofia, Bulgaria

Ability to deliver

20.2/40.0

16.2/20 Reviews

0/10 Clients & Experience

4/10 Market Presence

Service focus

25% Call Center Services

75% Other

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eTel Digital Agency

Undisclosed

Undisclosed

50 - 249

Sofia, Bulgaria

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

20% Sales Outsourcing

80% Other

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Squaretalk

$1,000+

Undisclosed

50 - 249

Sofia, Bulgaria

Ability to deliver

5.3/40.0

0/20 Reviews

0/10 Clients & Experience

5.3/10 Market Presence

Service focus

20% Call Center Services

80% Other

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Logicall Bulgaria AD

$1,000+

$25 - $49 / hr

2 - 9

Serdica, Bulgaria

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

100% Call Center Services

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Alba Center

$1,000+

$25 - $49 / hr

2 - 9

Sofia, Bulgaria

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

50% Call Center Services

25% Sales Outsourcing

25% Other

View Profile Visit Website

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Updated May 26, 2026

Sydney Wess

Call center costs can add up over time, so it’s important that companies establish a thorough budget plan before outsourcing.

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Guide to Call Center Outsourcing

Updated March 24, 2026

Hannah Hicklen

Call center outsourcing is when a company hires a BPO service provider to handle inbound or outbound calls.

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How To Hire a Call Center in 4 Steps

Updated March 24, 2026

Sydney Wess

Looking to hire a call center? Connecting with a reliable team has never been easier— check out our quick 4-step process to find the perfect partnership.

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Order Processing Inbound Appointment Setting Appointment Setting Sales Outsourcing Answering Services Telemarketing Outbound Lead Generation Virtual Receptionist

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