This document provides guidance on managing challenging customers. It outlines the DEFUSE method for dealing with irate customers, which includes not taking things personally, encouraging venting, focusing on feelings with empathy, uncovering facts, suggesting solutions, and ending positively. It also describes tips for using empathy and the AIR method of acknowledging feelings, inquiring about problems and feelings, and responding to issues and feelings. Finally, it gives advice for handling different challenging customer types such as chatty, confused, chronic complaining, aggressive, know-it-all, and silent customers.