This is my favourite:

Kuan: Please don't call me again

Telemarketer: OK, it takes 60 days to get on the no call list blah blah..

Kuan: That's not my problem. YOU figure out how to not call me ever again.

Telemarketer: Sir, it takes 60 days... blah blah

Kuan: Listen carefully, it's not my problem YOUR system takes such a long time. If you call me ever again, I am going to file a police report and put a restraining order on you. DO YOU UNDERSTAND?

Telemarketer: Thank you sir, if you have any questions, please call 1-800..

Kuan: LISTEN, DO YOU UNDERSTAND?

Telemarketer: Sir, it takes 60 days...

Kuan: I take it from your refusal to answer that you DO understand...

*CLICK*

Sometimes they hang up earlier, sometimes they have no clue what to do. I also threaten to sue them like any good Californian would do. That gets them trying to get to the hang up stage too.

Kuan