Might be a debt collector - asked for the person who had my number six years ago. She and her husband were financial deadbeats and Republicans (got a lot of calls from them, too).
Got a call, no message left. Probably just another debt collector trying to get a hold of my mother-in-law because she used us as a reference on a loan she defaulted on. Don't waste your time answering, they aren't going to be honest about the real reason they are calling, they just want to try to trick you in to providing any personal info they can get.