• In the business economy sector, external factors and changes in the market all have a great influence on the service. Most of the time, the customer cannot obtain satisfaction? To achieve good customer satisfaction, start learning to identify and observe customer needs and requirements. • Recognize the most common reasons why the customer complains, for example, they don't like your behavior, your way of speaking, politeness, etc. for customers to complain, the main standard management tool is that customers actually receive what they promised. • Discover the techniques to activate and maintain a privileged customer relationship. Sales and marketing colleagues will take the next step called operational standard and develop them according to the service and performance agency. These standards should be reviewed regularly with the employee. It is important that they know how the organization works..