If you encounter any problems when shopping on Alibaba, you can file a complaint in the following ways:

1. Submit a dispute on the order details page: If you have a dispute with the seller, you can click the "Transaction Dispute" button on the order details page on the Alibaba website and follow the relevant operation process. This function is called the "Dispute Channel", in which buyers and sellers can submit complaints and quickly resolve disputes.

2. Contact the merchant's customer service: If you find that there is a problem with the merchant when purchasing goods or services, you can directly contact the seller or the merchant's customer service for help. The Alibaba website also provides detailed merchant information, and you can find the merchant's customer service contact information by checking the voucher on the product page or order details page.

3. Customer service complaint channel: If you cannot negotiate with the seller, you can also file a complaint through Alibaba's official customer service complaint channel. You can log in to the Alibaba website or APP and enter the "My" - "Customer Service" - "Complaints and Suggestions" page, and submit relevant complaints on this page. Customer service will respond in a timely manner and help coordinate and resolve.

4. Official reporting platform: If you encounter illegal or fraudulent behavior during shopping, Alibaba also provides an official reporting platform. Users can log in to the Alibaba website and enter the "My" - "Rights Protection Center" - "Report Infringement" page to file complaints and reports to Alibaba.