Priority Payments Continental Divide

HORRIBLE HORRIBLE HORRIBLE!!!
Telemarketer calls and starts to give me his sales pitch. I was busy at the moment with a customer, so I cut him off and simply said, «I’m not interested but thanks», and then hung up. He then calls back 5 times within a 2 minute window. I finally answer and he begins to yell at me! No joke! Starts yelling at me and talking to me as if I were a child. He begins to say that I am unprofessional and that he’s not selling anything, so there is no need for me to cut him off. I know what this company tries to provide businesses, therefore I know that it isn’t a product that would work for us. Nonetheless I let him finish his whole pitch and in the end I told him how much we process in credit cards. He paused and said, «Oh… Well then our services don’t benefit you then».
I’m unprofessional?! Does anybody see the irony in a telemarketer calling someone unprofessional while they yell at them trying to get their point across.