Panorama did a programme a few months ago about scammers. This guy was on the programme and has managed to get a couple of scam call centres closed down. https://youtu.be/le71yVPh4uk
If you want to have a laugh at some of the scam baiters who waste their time then look up Kitboga, Scammer Payback to name a couple on YouTube. Kitboga had one of the scammers dangling for over 36 hours over a couple of weeks and at least 1500 phone calls.
You can see the process the scammers go through to try and get money.