>>227825
Pull pranks on them.
I once told Indian phonescammers that they had reached the operational support line and I asked them for their 6 digit verification code.
They didn't call me anymore after that. I'm starting to wonder if the phone's broken now.
If your voice is feminine enough you can pretend to be a child that's been kidnapped and is now at a rapist's locked home who's just out to get some anal lube. Make sure you inform your local police of such shenanigans before you do them, though. So you the /n/ doesn't have an article on effeminate Brazilian homosexual SWATted over pranking telemarketer.
Also: https://www.youtube.com/watch?v=pqqeynWN5AU