The methods of complaining about food and beverage outlets are as follows:

1. Pay attention to retaining evidence materials when consuming, such as invoices, consumption lists, receipts, credit card records, bank remittance records, screenshots of successful online transactions, etc.

2. When making a complaint, it is necessary to provide the facts and relevant evidence of the reported person's violation of laws and regulations;

3. Consumers can call 111 or 12315 to report;

4. The industrial and commercial departments will impose penalties on food and beverage outlets in accordance with relevant laws and regulations.

legal basis: article 15 of the law of the people's Republic of China on the protection of consumers' rights and interests

consumers have the right to supervise goods and services and the protection of consumers' rights and interests.

consumers have the right to report and accuse violations of consumers' rights and interests, as well as illegal and dereliction of duty of state organs and their staff in protecting consumers' rights and interests, and have the right to make criticisms and suggestions on the protection of consumers' rights and interests. How to identify consumer fraud

(1) The means used by business operators to provide goods or services, such as exaggerating or concealing the quantity, quality and performance of the goods or services provided, and misleading consumers;

(2) Whether the operator's behavior misleads consumers, and judging whether the operator's behavior misleads consumers should be based on the cognitive level and recognition ability of ordinary consumers;

(3) whether the business operator has the subjective aspect of committing fraud, and the goods sold or services provided infringe on the exclusive right of others to use a registered trademark.