2 complaints - London
I have just been called by this outfit also proporting to be microsoft and offering to clear up the junk on my computer to make it run faster. The man said his name was Mark Wilson but sounded very foreign and I could barely understand him.
Apparently from the Microsoft Service Support! I received 2 calls from an English sounding 'John Smith' with a very non-English accent. Called to tell me that my computer is running slow and that if I call back they can remove the virus from my system. Pretty clever seeings as I have a Mac and no Windows software at all let alone hardware.