So I went to a job interview for some sales position where it was revealed that I was to go door-to-door. I was about to tell the woman to fuck off, but decided to let it play out. Here is what followed:
"So why do you think you would make a good salesman?"
"That is no longer of concern in this interview. I have not been convinced that I want to work for you."
"[several minute defensive rant about how great the company is, room for opportunities, and competitive wages]"
"I am still not convinced. Hand me back my resume. [retrieve resume] Have a nice day."
Key to success: Assert yourself; stay confident. When things turn for the worse, take advantage.