What does ncs fluid handling systems do? The NCS Fluid Handling Systems service team was recently dispatched to a deep well dewatering project. In this case the project was to assist with ground water flow data for future industrial development.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 800-367-1050