I received 2 calls recently about os update from windows 7 to windows 10. Both calls received between 8-9pm, One was on saturday night. Both callers said they were from microsoft and were here to help update os or solve my laptop/ pc problem. Call reception also not good ( a lot of distortion) eventhough it displayed local numbers. This made me suspicious, as i have never heard microsoft providing such services. Furthermore on saturday night and with poor reception. I don't know what the callers trying to get from me, but I think they trying to download malware to my pc/ laptop. From there steal my personal info, password and etc. The callers sound like indian. When i exposed them to be scammers, they ended the call quickly