The caller id shows up now as "Kalamazoo MI 269-477-2153". I think they are either some kind of collection agency trying to track down someone else or a scam agency (or a combination of both). Stop calling people!!
Caller ID says "Per R" 269-477-2153. I have no answer machine and I never answer callers who I do not know. I assume it is a solicitor, an unsavory bill collector looking for someone else, or one of those scam artists. Do not answer when they call. But I have also got calls from Receiveable Perferred who claimed to be some bill collector looking for someone although the person was barely intelligible so maybe it was a scammer or they outsourced to somewhere in Africa where English is not well spoken.
I have received numerious multiple calls from this number in the past 2 weeks. They never leave a message and I do not pick up or return calls I do not know. I filed a complaint with the do not call registry and notified my phone company.