Got a call just now. Did not answer but they left message. A very poor recording saying they were "J C Christian". A debt collector Sounds kind of suspicious !!!
Caller ID displayed as "Array Services". Googled them and found they cover call center operation, debt collection and medical billing. As I have need of none of those things I just let the call to the fax machine. If they are serious about anything, they can always send me a fax. :-) but none of these guys ever do.