Claimed to be from Microsoft calling about an error message their tech recived from my desktop - which I don't have - then claimed to be calling about my laptop. When questioned, they hung up.
Claimed to be from Microsoft - told me I had a Windows error. Said NO we have an IT in our household. They hung up. Besides, it costs us to Call Microsoft for support. Here is link to the scam.
http://www.microsoft.com/security/online-privacy/avoid-phone-scams.aspx