Who called from 6468447979

No caller ID other than phone number. Hung up when they heard answering machine.

2 calls from this number - "Windows Technical Service."  When I asked "why are you calling me" he said "your computer is infected."  Response was "ok,ok" and I hung up.

Said he was Windows Technical Support and my computer is infected with a virus, I told him I've had these calls before and know it's a scam. He said It's not a scam and my computer will be ruined if I ignore him. I just said "ok, thanks" and hung up.

Got a call from this number and this isn't the first time.  He says he is with Windows Technical Support and that my computer has a virus and they need to fix it.  I keep telling them to quit calling this number because I know it is a scam.

It is a carbon copy of above incident. This is not the first time I received this kind of call. From my humble intuition, THIS CALLER A REAL SCAMMER