We've got a guy at work that responds to telemarketers with "What are you wearing?".
A local radio host - troubleshooter - has people call in with their numbers (they are usually pretending to be IRS or local utility companies).
He calls them, leads them on for a bit, then hands it to them. And he gives out the number to his listeners. So a few thousand people are calling these scammers, shutting down their phone systems. Quite funny actually.
They are getting quite aggressive lately, cursing and threatening, when they are caught.
You work with Mark Levin?