Please don't believe this call, this funny guy told me that he's from Microsoft and my computer had some problematic downloading, and they ask for a remote desktop. This is just a fraud.
What's more interesting is that after I told him that I am a software developer using .NET (I am) and just let him give me the detailed problem, this guy starts to call me "son of a b***h" or something similar, so obviously you should cut the line at the first second. :)
I got this call at 7am, it lasted 23sec. I told him to remove me from all databases and hung up. Sounded like India, but it was the same number posted here from LA.