At work today, an exceptionally rude sales rep first called & yelled at me and refused to let me explain the terribly simple solution to his problem, hung up on me...then called back twice and hung up immediately when I answered the phone...then finally realized he was going to have to deal with me. His hangdog resignation was utterly priceless.
I was able to explain what we needed to solve his problem, and when he called an hour later to implement it and spoke with a coworker, she reported that he thanked me. Oy...