This document provides 10 tips for dealing with difficult customers. The tips are: 1) be patient; 2) listen carefully and show empathy; 3) call them if you promise; 4) offer different solutions; 5) avoid negative words and remain polite; 6) apologize if needed; 7) repeat their concerns; 8) let them know their comments are being heard; 9) don't answer emails right after seeing them; and 10) consult with colleagues. The overall message is that dealing with difficult customers requires patience, active listening, keeping promises, offering multiple options, staying polite, apologizing when warranted, acknowledging concerns, and getting input from others.