[the Real fifi]

The list works for me. Get the name of the company (and , if you can, their phone number). Tell them you are on the don't call list, and you will report them . And do that!

[So Cal Rocket]

I'm on the National Do Not Call list too... and the number of calls has dropped dramatically!! In fact, I used to get several calls a day where I'd pick up the phone and there was nobody there... I don't get those anymore, either!

[discostu]

But don't tell them you'll report them until you get the information. The TMs were notorious for having mysterious disconnections back in the days of the original private lists (the law said they had to give you the ability to get on their private do not call) and if you tell them you're going to cost them 11 grand they'll probably hangup on you before you get all the information necessary. I'd play along like I'm interested and use that to get all the information necessary, then bust them.

[txhurl]

I threatened one who had a 'hold for an operator' call-style.. with an 11K fine. They'd called about 6 times a day for two weeks - I quit picking it up after the first few calls.
After I threatened the live person, not a call since.