Received a call from this number. Said they were "tech support" and that since I was a registered Windows user, my computer was sending them messages from its CLS # that it was infected with viruses and bad files and she was going to help me fix it. I asked her repeatedly to say who my service provider was (as Microsoft would always work with the service provider if they did actually call) and she didn't answer. I asked her to give me any other information about myself or my account, and she couldn't. I said that my landline number has never been affiliated or registered with a Microsoft account. She ended the call by saying "If you won't address me or this issue I will hang up now, but you will live to regret it". Stupid scammers.