Person with strong accent asked if he was talking with some name, not mine.  I said it was a wrong number and then he wanted to talk with the person  responsible for my computer.  He said that he had been affected by some type of very serious problem, and implied he was calling from Microsoft.  He asked me to turn on my computer, at which point I told him not to call again and hung up.  I've received one more call that I did not answer.