要求客户就处理和解决客户投诉的过程提供反馈。通过各种方式（例如，在线和电话）从客户那里获取有关客户投诉处理过程的有效性和绩效的信息。 Requesting customer feedback on the process of handling and resolving customer complaints. Obtain information about the effectiveness and performance of the customer complaint handling process from the customers through various means (e.g., online and by phone).