I actually had a pollster object when I refused to participate, and try to persuade me to respond.
"You'll just publish what you want, anyway. Never call again."
I find that the most enjoyable means of terminating a call from a polling organization is to agree to answer the poll. Then, answer the first and every succeeding query with “I wouldn’t vote for that socialist SOB with a gun to my head.”. This usually results in confused statements and advice on how to answer the yes/no, rate 1-5, etc. Questions. If you ignore their attempts to get you back into their groove and simply repeat the mantra, they hang up and move on.