1. Open the [Douyin] app, enter the [Douyin Mall], find the order to be complained, then go to the [Order Details Page], pull down the page to find the [Official Customer Service] at the bottom of the interface, enter the store to be complained in the consultation interface, click [Connect to Manual Customer Service], and then give feedback according to the content of the complaint.

2. Open the [Douyin] app, click and enter the [Douyin Mall], find the product order to be complained, click and jump to the store selling the product, find and click the merchant customer service, establish a chat box with the store merchant, then find the [...] option in the upper right corner of the dialog box, go to the [Current Store Settings] interface, select [Complaint Merchant] on the page, and then select the corresponding complaint content based on your own complaint needs.

3. Call the official customer service number "10101588" to provide feedback.

If the above methods cannot solve the problem, you can also file a complaint through the Consumer Association.