Received two calls from some company offering to fix my Windows problem. They called on two phone numbers, one of which is not used. In the first call, a woman claimed that my Windows computer was infected. The second caller 'Gary' claimed to be from Windows Tech Dept and then Windows Service Center and told me that the problems were coming from a computer running Vista...surprise! No computer running Vista here. On the first call, they asked us to call 877-502-3467. The second caller threatened to shut down my computer!
I believe this is a scam, wouldn't Microsoft send me an email first, rather than trying to call.