how do you handle telemarketers?

Well, I have call display and if I don't recognize the number I don't answer. If the call is legit the person leaves a message and I call back. Telemarketers usually do not leave a message. If by chance I answer the call in another room where I don't have call display, I can usually tell whether or not it is a telemarketer call, because their computer has dialed my number and there is a slight delay before a human picks it up. I hang up before the human comes on the line. If by chance a telemarketer gets a hold of me I let them finish their talk and then say, thank you very much I am not interested, please don't call again and hang up before they can get in another word. You live in the USA. There is a place where you can register that you don't want telemarketer calls. I read about it but don't recall the website or telephone number.

well the first call i tell them im not interested the second time i hang up the third time i telll them i not intersted so stop calling [ it could get worse]

I am always polite. I try to tell them right away I'm not interested. If I don't get a chance because they are talking so fast, I let them talk and then tell them no thank you. If they continue to try to sell me something, I tell them no thank you again. If, for a third time they go into a sales pitch, I'll say, I'm hanging up now. I hardly ever just out and out hang up on them, unless they are blatantly rude. I am on the do not call list, but some of them still call, which is against the law. I always tell them to remove my number from their list, because they are legally bound to do that in the U.S. if you ask them too.

I have caller ID so if I do not recognize the number I don't answer it. If I should pick up and it's a telemarketer I am polite but I tell them I am not interested then ask to speak with a supervisor at that point I ask to be removed from their call list and advise if I continue to receive calls after this I will pursue legal action and hang up. This seems to have cut way down on the calls.