I just had one call me, and I said no the first time, he continued to talk. I told him again no thanks, and that I was about to hang up. As I hung the phone up he was rattling off a phone number that I could call if I had any questions.
It just sparked the question: What types would be suited for that type of job?
I'm thinking an ExTP would be ideal- having that ability to talk to people and take rejection and hear all kind of rude and ignorant crap thrown at you.