It's a scam...they tell you they are your Microsoft certified technician calling about your computer and start asking questions about your log in info...don't let them bait you in.
I have had about 20 calls from them I rejected the first 15 then answered they were extremely rude saying the were calling on behalf of Government legislation for PPI I inform him (peter he said his name was) that I was not interested and not to call me again he proceeded to call me an idiot repeatedly. I then got calls from 7695550160 - 8315550166 - 5615550141 another 10 times how can I stop these calls can anyone help please