Legal analysis: Hangzhou 24-hour consumer complaint hotline: 123 15. When consumers' rights and interests are infringed and the respondent is under the jurisdiction of the administrative department for industry and commerce, when consumers' legitimate rights and interests are infringed during consumption, they can call 123 15 to complain. After dialing 123 15, if you need to make a complaint or report, please answer the questions according to the staff's prompts, truthfully tell the facts, reasons and requirements of the complaint, and tell your name, address, telephone number or other contact information as well as the name, address and telephone number of the respondent. 123 15 can be dialed as follows: 1. When the rights and interests of consumers are infringed, the respondent is the administrative department for industry and commerce; 2. When consumers are in the process of consumption, your legitimate rights and interests are infringed; 3. When consumers find fake and shoddy goods and "black dens" for manufacturing and selling fake and shoddy goods, they call 123 15 to report complaints, which will help consumers mediate disputes; If economic violations are found, they will be investigated and dealt with according to law.

Legal basis: Article 37 of the Law of People's Republic of China (PRC) on the Protection of Consumer Rights and Interests shall perform the following public welfare duties: (1) To provide consumers with consumption information and consulting services, improve their ability to safeguard their legitimate rights and interests, and guide civilized, healthy, resource-saving and environmental-friendly consumption patterns; (two) to participate in the formulation of laws, regulations, rules and mandatory standards related to the rights and interests of consumers; (three) to participate in the supervision and inspection of goods and services by the relevant administrative departments; (four) to reflect, inquire and make suggestions to the relevant departments on issues related to the legitimate rights and interests of consumers; (five) to accept consumer complaints, and to investigate and mediate the complaints; (six) complaints involving the quality of goods and services, you can entrust a qualified appraiser to identify, the appraiser shall inform the expert opinion; (seven) to support the injured consumers to bring a lawsuit against acts that harm the legitimate rights and interests of consumers or to bring a lawsuit in accordance with this law; (eight) through the mass media to expose and criticize acts that harm the legitimate rights and interests of consumers. People's governments at all levels shall provide necessary funds and other support for consumer associations to perform their duties. Consumers' associations should conscientiously perform their duties of protecting the legitimate rights and interests of consumers, listen to their opinions and suggestions, and accept social supervision. Other consumer organizations established according to law shall carry out activities to protect the legitimate rights and interests of consumers in accordance with the provisions of laws and regulations and their articles of association.