There should be a NGO for properly destroying scammers. And I'm not talking about documenting the scams. I'm talking about having the resources to deny them service, find their identities and report them to authorities. Even meddle with their computers using malware.
These people are preying on mostly elderly people and stealing their money.

Count me in. If you find out where one of them lives, I'll bring the hockey masks.

Joke count aside, there's communities who educate people on scams, keep scammers busy and try to unmask their identities. It's called scambaiting, I used to do it for a while.

And if you're up for that vigilante justice thing really hard, write a virus and give them hell. What are they gonna do, report you? ;)

(Disclaimer: This is probably illegal nonetheless. Sometimes, I hate our legal system).

Any free voip service to call those scam numbers? I wanna do scam baiting.

An IT journalist, Paolo Attivissimo, suggested to simply answer their emails by faking a real person. Waste their time. Multiply by one hundred, and they won't be able to cope with that many users and it won't be economically viable to keep the system. Basically a human DDoS.