There is a legit company named Advanced Collection Services Inc. It has headquarters in Lewiston, ME. Its mailing address is 155 Center St Auburn, ME 04210-5229. There is also another company registered as Advanced Collection Service, Inc. that's based in Nebraska. Its mailing address is 714 Tara Plz, Papillion, NE 68046-2032. If you’ve received any email or phone call from ACS, check your credit report. If you don't see the real Advanced Collection Services Inc., on your credit report, then you're probably dealing with fraud.