Customer service center is a window connecting customers and credit card centers, and the function of this window is communication. It includes three service units: customer service room, complaint service room and telephone interview room. In addition to the professional position of customer service specialist, there are two logistics support units, namely, talent training group and quality management group, which are responsible for recruitment training, administrative management and business support. The task of the room service specialist is to provide customers with quick and accurate consultation and help. There is no need to attract customers.