On 1/13/2017 a lady named Nancy (with her Chinese accent) called from 855-976-0831 saying that she was a Microsoft Certified Technician and my computer had been sending error codes to the Microsoft Server and she wanted to fix it. I knew it was a scam, but continued playing her game for fun. I said that I was at work and she could call me after 7 pm. She called from 650-919-1654 twice but I said I was away from home (and to make it more interesting for her, I said that I'm a businessman who travels a lot but don't really understand how computers work). I can imagine how she was licking her lips. I've been playing with her for about two weeks. On 1/28 she called again and this time from 240-897-8959. She said that she has my Windows license number and I also can see it from my computer. So, she says if the number I see and hers don't match, then I can hang up. So, to see my Windows license number Nancy told that I had to follow her instructions and she asked me to open the Windows Run window and type in "cmd" command line. And then she said to type in "assoc" (which actually displays or modifies file extension associations). Then she reads me CLSID string (which is the same for all Windows) and says that's my Windows license number. At that point I could not control my laugh anymore. She understood that I had been playing with her and said that they have my all personal information and I had to tell at first that I did not trust her. She was mad, but I had a good day and laugh.
I wonder why this type of scam is not controlled by FBI or police ever? How they can get US phone numbers so easily?