I got a call from this number.  It was a man with a heavy accent, Indian I think, telling me that he was calling from Microsoft Support and that they had received notifications from my computer about a series of viruses.  I would need to turn on my computer so they could log onto it remotely to fix the problem.  Nope.  I told him that I didn't believe him and hung up.  He had the nerve to call me back and start the script all over again.  When I told him that I wasn't near my computer, he asked when he could call back.  I told him that I didn't want him to call me back, and that I didn't believe that he was with Microsoft.  THEN he told me I have a "sweet voice."  Nope.  I hung up again.