TIMES WHEN PEOPLE SHOULD HANG UP
(A)
Yes, when any salesperson is pushy, rude, talks on and on, or keeps "second-efforting" or rebutting over and over, when the customer has repeatedly shown zero interest. (But that does not mean hanging up as soon as you here a company name and realize it's a sales call.)
(B)
Super Long Sales Scripts
(Your company is being unfair to you and the custormer if they make you read a long script at the very begining.) but even then, the customer could say, "Excuse me, I'm not interested." instead of rudely hanging up.
(C)
When you have a death in the family and someone calls you about a headstone, etc before the funeral! These are the ghouls or our industry.