I've been getting daily calls from this number, once a day for about two weeks.   They don't leave a message, and I'm pretty sure that I'm not in collections for anything.  I have all of my creditor's numbers in my cell phone, and this isn't one of them.  It seems to be a cell phone number from Minnesota.  When I return the call, it says the voice mail box is not set up.   Any one have any ideas?