For a while, I used Jolly Roger [1] as a sort of DDOS / attempt to get my number removed from the call lists. I have no problem paying for it if it were integrated/automatic. But after a while, I just got tired of manually adding it to a call.
It's also genius, if we can automate transferring telemarketers to stuff like this, we'd be using technology against them, use up all their human paid time and make it unprofitable to spam call.