Caller ID shows different phone numbers all the time.  It is Coface.  Calling in reference to a case #.

Received a phone call from this number. No voice message left.

877-509-2179 is the toll-free listing for 504-469-9545: Coface Collection North America Inc

I received a call from "Mr. Roy" who launched into spiel that I was delinquent on an account i never heard of, and wanted me to set up payment plan.

It is Coface of North America.

Go here to see how to deal with these guys: http://800notes.com/Phone.aspx/1-800-509-6060/13

Received vm about a delingquent account which I do not have.... sounds suspicious.