This is the number the man gave me (I don't have caller id).  He said that my computer was sending malware alerts and that if I would go to my computer he would walk me through fixing the problem.  I told him that I use malware software to clean up the computer once in a while & that I was not having any functionality problems, but I would call him if I did.  That's when he gave me this phone number.  He had an accent, likely Indian.  He mentioned Microsoft, but never really identified himself or his company.