Immediately call back and received an answer of "Foreclosure Relief". I ask the person answering why they called and she stated she did not call but perhaps one of their agents did. I blocked future calls from this number with Google Voice. What a wonderful device to stop these telephone spammers.
Problem is, these guys have AT LEAST 38 known #'s! So call blocking won't be that efficient. Report all recurring harassment from them to the phone Co., the police, and the F.T.C.