Years ago back when I had a landline, I was excited when "Gallup" had finally called me to participate in a poll.

It turned out to be a "push poll" for a particular issue (which I agree with) where they were trying to identify personal info about myself and sign me up for something.

I suspect this was not an uncommon campaign technique, and it only needed to happen once before ppl stop answering calls from "Gallup".