First, open Pinduoduo app and log in to your account, and then click the Personal Center button in the lower right corner. On the personal center page, you can find the official customer service options. After clicking enter, you can see the self-help column, which provides functions such as quick query of order information, application for refund, and business declaration. If you want to consult customer service about some shopping problems, you can click the contact customer service function at the bottom. In the pop-up dialog box, you can enter the question to be consulted and send it. If you need to communicate with manual customer service, you can send manual customer service to apply for manual service.