This document provides information about the importance of customer service. It discusses how keeping existing customers is more important than attracting new customers, as repeat customers spend more and it costs less to retain them. The "ladder of customer loyalty" shows different levels from prospects to advocates. Strategies for building loyalty include satisfying customers and maintaining relationships. Good customer service involves listening to customers, addressing complaints, being helpful and courteous. Specific dos and don'ts are provided for communicating with customers. The document also gives tips for dealing with different types of challenging customers.