According to the experience of querying Baidu, if you buy fake goods, you should negotiate with the mall to return or exchange them. If negotiation fails, you can call 123 15 to complain. Disputes over consumers' rights and interests between consumers and business operators can be resolved through the following channels: consultation with business operators, requesting mediation from consumers' associations, and safeguarding rights through legal channels. So you can call the police.

Related case: On the evening of March 17, 2023, a woman walked into a jewelry store in Xiguan Street, Jinhua Development Zone. She told her boss, Mr. Chen, that she was in a hurry to use money and wanted to sell her 18k gold diamond ring cheaply. In order to prove that the diamond ring is real, the woman took out a certificate stamped with the official seal of the national jewelry and jade inspection agency. After negotiation, Mr. Chen agreed to buy this 18k gold diamond ring for 6000 yuan. Unexpectedly, the next day, after Mr. Chen repeatedly tested the ring with professional instruments, the result showed that it was an artificial diamond. Mr. Chen immediately reported the case to Xiguan police station. After receiving the report, the police confirmed that the suspect was a man and a woman through investigation and analysis. The man is responsible for driving the vehicle, and the woman is responsible for selling fake diamond rings in the nearby gold jewelry recycling store. The police tracked all the way and successfully arrested the suspect in Taizhou. When they were arrested, the two suspects were trying to commit fraud again in a local jewelry store.