This document discusses customer complaints and their handling. It defines a complaint as an expression of dissatisfaction or unacceptable situation. Complaints arise due to differing expectations and grievances. When handling complaints, it is important to believe the customer, listen without being defensive, apologize even if not at fault, solve or satisfy the issue, and thank the customer. Proper body language like making eye contact, nodding, and smiling is also important when dealing with angry customers. Some magic words and phrases can help de-escalate situations. Overall, complaints should be viewed as opportunities for improvement rather than problems.