2323676789

This is what they said when I answered, too.  Something about my computer sending messages to Microsoft.  All I said was, "I don't think so!" and hung up.

I got a call from this number tonight saying it was in regards to my windows home computer, funny thing is, the number is registered to my mother-in-law, and she doesn't own a computer just me, and being that this number is a few months old, and my computer is a few years old, there is no way in hell Microsoft has my number, beware it's a scam.