CIS FIN SVCS on a credit report: finance company loan
CIS FIN SVCS is probably a loan from a finance company: on reports, "FIN" usually stands for finance or financial.
How to find out which company reported CIS FIN SVCS
Your free report at AnnualCreditReport.com shows the full name and address of whoever reported CIS FIN SVCS; our guide to identifying a creditor covers the other ways to find out.