Legal analysis: You just need to take things and receipts to the mall to return them. If you don't return it, you can sue, and the seller may be suspected of fraud.

Legal basis: Article 45 of the Law of People's Republic of China (PRC) on the Protection of Consumers' Rights and Interests, business operators shall be responsible for repairing, replacing and returning goods stipulated by the state or agreed between business operators and consumers. If it cannot be used normally after two repairs within the warranty period, the operator shall be responsible for replacement or return.

For large commodities that are guaranteed to be repaired, replaced or returned, if consumers ask the operators to repair, replace or return, the operators shall bear reasonable expenses such as transportation.

Article 266 of the Criminal Law of People's Republic of China (PRC), whoever defrauds public or private property in a relatively large amount shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or public surveillance, and shall also, or shall only, be fined a huge amount or there are other serious circumstances, and shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years, and shall also be fined or confiscated. Where there are other provisions in this Law, such provisions shall prevail.