Was a telemarketer for 2 weeks once. Mostly calling for donation type stuff on behalf of March of Dimes and the like but sometimes they put us on scripts for the NRA. I had gotten used to plenty of no's and was already on the verge of quitting when this fellow said yes.
Phones are already a bad job for me as I am both a people pleaser and get stage fright, so imagine my reaction when the prompt after his agreement to a $25 donation was to ask him for $50, and then $100, and well you get the idea. The final prompt it gave me was for a $500 donation in exchange for a lifetime NRA membership and a leather jacket and I'll be god-damned if this guy didn't agree without breaking a sweat. I quit within 48 hours.