Man earns $22,000 making robocall companies pay for those annoying calls (wtsp.com)

This would be much more interesting and useful if it didn't cost $47 to find out how to do it.

what he is doing is far from novel and now he is trying to profit with his stupid little kit. Biggest hurdle is getting to info out of them which I have tried.

I tried this once. I spent ten minutes on the phone (recording it) with someone who obviously knew nothing about my car (I don't own one) but who wanted to confirm I had the one on they think I have (Of course I had to go first). She had a strong Indian accent so I figured from a call center in India, so I had to wait until I was speaking to someone in America. As I finally was being transferred to the company the line just went dead.