Telemarketers - How do you deal with them?

I have a cell phone, and that's it. So, telemarketers really aren't supposed to call, but since the whole thing's computer controlled, the numbers get rotated in. (Phones are dialed in numerical order.)

Anyway, my provider blocks those calls automatically, so I have some interesting numbers showing up:

1-555-555-5555
1-121-212-1212

And so on.

However, I did have this experience at work. A telemarketer called, I answered, and listened to her sales pitch (hey--it got me out of work). However, there is a trick question involved. "Are you over 18 and have the authority to change this part of your job?" Yes, I'm over 18, but I don't have the authority. I told her to stop and contact the office. She told me just to say yes, and it would be all right. Wrong answer. I hung up on her, *69'ed the number, called back, and got the manager. I "politely" suggested re-training their callers that when someone can't answer a question, then they should politely hang up.

But, before the cell phone--I had a normal phone, and I've been rude to a few others. Once mispronounced my name, and I corrected him, and his response: "Chill." *click*

Tele: "Do you have a few moments to take our survey?"
Me: "I'm sorry, no. I have to get to work."
Tele: "This will take only a few moments."
Me: "Okay. But will you call my work and tell them I was late because you were too rude to listen to my wishes?"
Tele: "When would be a good time to call?"
Me: "Never." *click*

Jam it back in, in the dark.