I also have received several calls from this number. However today {11/14/2013} It was someone telling me they were from Microsoft and my computer may have been compromised and wanted me to let them have control of my computer so they my check it. I told them they were nuts if they thought I was stupid enough to just allow to access to my computer and I would call Microsoft myself and see if they were legitimate. He hung up on me!
Called several times and hangs up. Then tried to get personal information from me about a computer scam. Ask them if it was the oral sex hotline and they hung up.
Just called me and a foreign person said they were from Microsoft and that they had detected I had some technical issues. I just said, Oh please and hung up on them.