Caller hung up as soon as my answer machine came on. I don't answer unknown phone numbers & caller ID said "Michigan Caller". I don'tt know anyone there plus I have no bills that go to MI either, so it's a telemarketer or scam outfit.
Calls two times a day without leaving a message. Usually the unwanted calls I get are political fund-raisers, but usually those are from "unknown". So this is most likely a timeshare or credit card thing -- will block this caller in the future.