Discover the best call centers in Missouri that can enhance your customer support experience. DesignRush connects you with top providers trusted by major brands like Honeywell and Estee Lauder. With over 1M monthly visitors and 40,000+ vetted agencies, our platform is designed to help you find the right partner for your needs. Compare providers by industry expertise, client type, budget, reviews, team size, and portfolio.

Best Missouri Call Center Service Provider Rankings

3 Companies - Rankings updated: April 01, 2026

We evaluate every agency on DesignRush according to expertise credentials and client satisfaction ratings. Some placements are sponsored.

United States × Missouri ×
  • Ride with the HR Experts.

    With nearly 200 clients, we offer comprehensive HR services, infrastructure, and expertise. Our focus is to empower businesses of all sizes, allowing leaders to prioritize strategic growth. From payroll and benefits administration to employee relations and recruitment, we handle it all. Recognized for  [... view Tandem HR profile ]
    Location
    St. Louis, Missouri
    Number of Employees
    100 - 249
    Minimal Budget
    Under $1,000
    Portfolios Count
    2 Projects Listed

    Tandem HR Services

    • HR Outsourcing
    • Call Centers
    • Accounting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Clients and Projects

    View Full Portfolio
    • American Massage Therapy Association
      Payroll Project American Massage Therapy Association
    • Get Fresh Produce
      HR Outsourcing Project Get Fresh Produce
    Comprehensive analysis done by DesignRush Agency Experts.

    Tandem HR Reviews & Testimonials

    • Kellie Champagne
      Kellie Champagne Review from Google
      1.0

      Kellie Champagne's Review Sourced from Google

      Our company left Tandem HR when they hiked the prices in 2024. Apparently, they do not send employers, copies of W2's for companies that have left service. I'm supposed to reach out to each employee to get a copy. Nice job, for doing the one job you had.

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    • Ryan Cobb
      Ryan Cobb Review from Google
      5.0

      Ryan Cobb's Review Sourced from Google

      Tandem HR has done a great job maintaining the white-glove service we have come to expect over the years. The HR, Payroll, and Benefits experts that engage with our team feel like true partners rather than a third-party vendor.

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    • Heather Worth
      Heather Worth Review from Google
      5.0

      Heather Worth's Review Sourced from Google

      The quality support I receive from my contacts at Tandem HR is unbelievable. I don't even entertain outreach from other PEOs. Paola consistently goes above and beyond for Prevention First. She is always so pleasant, knowledgeable, responsive, and helpful! The rest of the team (Janet, Danielle, Jennifer, etc) is really great too!

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    Reviews verified by DesignRush and sourced from the agency's profile
    • Get Fresh Produce
    • American Massage Therapy Association
    • Belgravia Group
    Data sourced from the agency's DesignRush profile
  • Demand More From Your Revenue Cycle.

    Revele is a leading provider of healthcare revenue cycle and electronic health record services.  [... view Revele profile ]
    Location
    St. Louis, Missouri
    Number of Employees
    100 - 249
    Average Hourly Rate
    $35/hr

    Revele Services

    • Business Consulting
    • Call Centers
    • BPO
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Advanced Astro
    • The Clinic of Gadsden
    • Regan Medical Center
    Data sourced from the agency's DesignRush profile
  • B2B Lead Generation Powerhouse

    The powerhouse of B2B lead generation, Abstrakt Marketing Group is uniquely poised to maximize your growth potential. Founded a little over 10 years ago in St. Louis, we now serve 1700+ clients across the nation with 550 employees at our disposal! Our full-service approach and comprehensive inbound/outbound  [... view Abstrakt Marketing Group profile ]
    Location
    St. Louis, Missouri
    Number of Employees
    500 - 999
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $1,000 - $10,000

    Abstrakt Marketing Group Services

    • Content Marketing
    • Social Media Marketing
    • Digital Marketing
    • Graphic Design
    • Creative Services
    • Video Production
    • Call Centers
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Abstrakt Marketing Group Reviews & Testimonials

    • Nick B
      Nick B Review from Google
      5.0

      Nick B's Review Sourced from Google

      With Abstrakt, I got more than just a web development team. They delivered a true comprehensive digital strategy. I hire Abstrakt for an update to the company website, with a focus on improving our Google search rankings. They started with a thorough strategy, tying their work back into specific goals and Google keywords. But the artistic talent showed with the actual site development. They wrote the text for each of the pages; each page was better than anything I could write. But beyond text, the images, site layout, colors, etc. They all reflected a consistent design language that subtly and constantly reinforced my marketing message. Even when I insisted on extra content that only appealed to a small market segment, they reformatted that content to drive the same compelling message as the rest of the site. And it worked. Within one week of launch, I got a new lead from the site. Abstrakt was a complete package of expertise. At every step, they delivered better than anything I could achieve. That was the expertise I valued.

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    • Jillian Mayott
      Jillian Mayott Review from Google
      5.0

      Jillian Mayott's Review Sourced from Google

      Working with Abstrakt has been a real partnership — you truly get back what you put into it. I’ve had the pleasure of working closely with Sarah Ernst, and she has been the key reason we continue to grow with Abstrakt.Sarah has taken the time to really understand the Alltek brand and has consistently presented it in a way that feels authentic, professional, and aligned with who we are. Because of her dedication and creativity, we’ve been able to not only expand our reach but also build genuine connections with new businesses.She is proactive, collaborative, and always focused on what will help us succeed — the kind of partner you want in your corner. Sarah is absolutely the standout of our experience with Abstrakt, and I can’t recommend her highly enough!

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    • GPG Admin
      GPG Admin Review from Google
      5.0

      GPG Admin's Review Sourced from Google

      We love Abstrakt Marketing Group! Every year they bring a large group of employees to volunteer at our shelter. They are such a fun, hard working group and we almost always have at least a couple employees that decide to adopt or foster a pet while they are here volunteering! Shout out to Abstrakt for giving back to their community in such a meaningful way!Thank you from your friends at Gateway Pet Guardians!

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    Reviews verified by DesignRush and sourced from the agency's profile
    • Accounting Industry
    • Construction Industry
    • Finance Industry
    Data sourced from the agency's DesignRush profile

About The Author and Expert Reviewer

Bojana Trajcheva is a seasoned content editor and innovation researcher with extensive experience in the tech and marketing industries. Formerly Editor-in-Chief at Studentsko Eho, she developed a strong foundation in content creation and editorial leadership. Bojana further honed her skills in senior innovation research roles and now brings this combined expertise to her work as an editor at DesignRush.

Director of Client Relationships

Andrija Savić is an accomplished and highly competent sales professional with record-breaking achievements. His work at BSC Kragujevac, a leading European NGO affiliated with SPARK Netherlands, resulted in a 24% increase in course completion rates. While at Global Media Box, his team contributed 26.5% of the company's monthly sales in just seven months. Since becoming the Director of Client Relationships at DesignRush, the business has gained a 700% revenue increase, a testament to his proven competency and dedication to customer satisfaction.