Many, many calls. Sometimes I have answered, and after a long pause heard simply a goodbye. Called back a few times, and occasionally someone just answered hello, then nothing. Usually, I just let it ring. The other day, I picked up and a man with a thick East Indian type accent, said pretty much the same things the other reports have mentioned. He said that he was with Microsoft and that they had been receiving a great many error reports from my home computer. I told him about previous calls and about not being able to find a 999 area code in USA. After a bit of back and forth, he admitted it was not a telephone. He said it was an internet phone call, and that he was in NYC. Gave me a number I could call back and that I should ask for him, Mark Brown( no extension) I told him over and over everything was fine. Finally he said, in a weak voice, okay, and disconnected. How do you block this? Are they able to hack our computers? My computer may have been on that day. I am worried and want to have this harassment stopped!