It is illegal for your good friend to meet some unfair treatment when eating in the restaurant. You can complain to the industrial and commercial department. Article 9 of the Law on the Protection of Consumer Rights and Interests: Consumers have the right to choose their own goods or services. Consumers have the right to choose their own operators to provide goods or services, choose their own products or services, and decide whether to buy or not to buy any kind of goods or accept any kind of services. Consumers have the right to compare, identify and select when choosing their own goods or services. Article 11 Consumers have the right to fair trade. When purchasing goods or receiving services, consumers have the right to obtain fair trading conditions such as quality assurance, reasonable price and correct measurement, and have the right to refuse the main characteristics of compulsory trading behavior of operators. The subject of the behavior is a natural person who has reached the age of responsibility and has the ability to be responsible. Units can also constitute this behavior. If a unit commits this act, the directly responsible person in charge and other directly responsible personnel shall be punished according to the provisions of Article 46 of the Law on Public Security Administration Punishment. This act not only violates the legitimate rights and interests of the counterparty, but also violates the order of the commodity trading market. Commodity trading is a legal relationship between equal civil subjects and should follow the principles of voluntariness and fairness in market transactions. However, in real life, the phenomena of forced buying and selling, forcing others to provide services or forcing others to accept services occur from time to time, which violates the market trading principles, destroys the market trading order and infringes on the legitimate rights and interests of consumers or operators. If the perpetrator forcibly trades, it is harmful to society and should be punished by public security administration. If the circumstances are serious, the subjective aspect of criminal responsibility should be investigated according to law. Subjectively, this behavior shows direct intention, while indirect intention and negligence do not constitute the objective aspect of this crime. Objectively, this behavior shows the behavior of buying and selling goods, forcing others to provide services or forcing others to accept services. It is the essential feature of this behavior to force others to trade with themselves or a third party against their will. The so-called violation of others' will means that others do not want to buy goods from them but force them to buy them, others are unwilling to sell goods and force them to sell them, others refuse to provide services and force them to provide them, and others are unwilling to accept services and force them to accept them. The so-called service refers to all kinds of business services, such as accommodation, transportation, catering, maintenance, cleaning, gas delivery, furniture consignment, and hourly service. It should be pointed out that for forcing others to sell goods or provide services, others should generally be engaged in the work of selling goods or providing profit-making services. If others are not engaged in this kind of profit-making work, and force others to sell their own goods, such as ancestral things, or force those who are not engaged in gas transportation to carry gas for themselves, and force those who are not engaged in food and accommodation to provide food and accommodation, it cannot be punished as this behavior. In addition, services should be legal for-profit services. If it is not a legitimate service, such as forcing people to provide illegal services such as prostitution and gambling, or insulting services such as washing their feet and pouring urine, then