According to Article 31 of the Law on the Protection of Consumer Rights and Interests, if an operator provides goods or services in advance, it shall clearly agree with consumers on the quantity and quality of the goods or services, the price or expenses, the time limit and method of performance, safety precautions, risk warning and after-sales service. "For prepaid consumers, if the merchant fails to provide the agreed service, the consumer has the right to request a refund, and the business operator shall perform the refund responsibility. If you refuse a refund, consumers can complain to the relevant industrial and commercial departments. "