Who is national credit services ncs? National Credit Services (NCS) is a nationally licensed, full-service private collection agency (PCA) with more than 25 years of experience in professional revenue recovery. NCS has served businesses across the U.S. since 1995, delivering comprehensive recovery solutions for business-to-business (B2B) clients in various industries.How do i contact ncs customer service? Login if you have questions, concerns, or issues regarding your account with NCS. Once you are logged in, click the "Contact" Us button. Friday 8:00 a.m. EST to 5:00 p.m. ESTHow do i contact national credit systems? National Credit Systems, Inc. P.O. Box 312125 Atlanta, GA 31131 Free 800-367-1050Who is ncs in real estate? More than Just Closings. National Closing Solutions (NCS) is a full-service real estate settlement services and vendor management company providing title insurance, escrow services and ancillary products to the first mortgage, refinance and equity mortgage industry.