1. If the seller is blacked out because of a shopping dispute, you can try to take a screenshot to keep the evidence and send it to the platform customer service to make a complaint, so that the platform customer service can act as a middleman instead of contacting the seller.

2. If there is something wrong with the received goods, you can take photos to keep the evidence, and then contact the platform customer service to complain and apply for a refund.

3. In addition, you can also make complaints through Taobao official Xiaomi and black cat complaints.