My hotmail account messages recently became unaccessible and I called a UK freephone number that I believed to be hotmail's official support centre. The operator confirmed that they were the tech support for hotmail, twitter, facebook etc.
However, it was not the official support centre, it was the above con artists. The operator proceded to inform me that my account had been compromised and my network was under threat.
He ran a number of things on my PC to demonstrate when my network / account had been compromised (after I gave him remote access via
www.showmypc.com) and wanted to sell me a number of packages which were all very expensive etc.
I made a note of his name and what he told me as I wanted to verify his claims with my brother-in-law, who is an IT engineer.
Subsequently all his claims were false and my PC / hotmail acct / network is all fine.
I have reported the company to Microsoft. Be careful and do not use these jokers.