Called my home and spoke to my wife.  Man with Indian accent told her he was from "Windows" and she needed to open some log files on her computer and verify some activity.   Wife refused and asked him to call back after I get home.

If you try to call the number back, a recording asks for card number like a pre-paid calling card.

I have been receving calls from this number for a month.  This number calls me at work asking me to pay a bill without an invoice.  This number calls my home asking for different individuals each time.  This seems very suspious.  If you try to call the number back, it asks for a credit card number.  Not sure who can stop this but please be aware.

I keep getting phone calls from this number.  They don't leave any messages.  Probably a scam artist.