Unfortunately, with most telescammers being overseas from the targets, make it so much harder to track down and prosecute the people behind it.
It's become a big problem here as well, we get calls calling to be from Telstra (the primary telco here), ATO (Aus Tax Office, aka IRS) or from Microsoft.
I even had one the other day claiming to be from my ISP, and that I had been hacked and that my PC was being used for torrenting... they immediately wanted to show me event viewer with all the errors, and gain remote access... pity I run Arch Linux on my stuff, and our router blocks torrents and has upnp off... I played along for a few minutes, but saying I had no errors in the event viewer, and wanted them to show the application from procmon that was causing the traffic... they then got the shits and hung up on me...
The one prior said I was a lier, that there is no such thing as a
Sun Ultra 27 and he had never heard of Solaris 11... So I asked him to go to google, and search for it... Basically the response was "you f**ker, don't f**k with me" and a hung up call...