1. Collect and keep relevant evidence, such as ordering menu, payment receipt or invoice, and agreement on products (dishes, services, venue) when ordering food;

2. Communicate and negotiate compensation and compensation with the person in charge of the restaurant;

3. If the other party admits the fault, it is best to keep written or recorded evidence;

4. If negotiation fails, a civil compensation lawsuit can be brought to the people's court when necessary. You can also complain to the local industry and commerce department.

Legal basis: Law of People's Republic of China (PRC) on the Protection of Consumers' Rights and Interests Article 2 Consumers' rights and interests are protected by this law when they purchase or use commodities or receive services for their daily consumption needs; Matters not specified in this Law shall be protected by other relevant laws and regulations.