Tmall complained that the merchants did not have SMS tips.

Complaining businesses will not be retaliated. Complaint means that the victim's rights and interests are infringed by the organization involved and he has the right to claim rights from the relevant state organs. The complainant is a person whose rights and interests have been infringed. Consumer's complaint refers to the behavior that consumers request the mediation of consumer rights protection organizations to safeguard their legitimate rights and interests after they have a consumer rights dispute with operators because of their daily consumption needs to buy or use goods or receive services. Consumer complaints can be made by telephone, letter, interview and internet. Article 11 of the Law of People's Republic of China (PRC) on the Protection of Consumers' Rights and Interests, consumers who suffer personal or property damage due to the purchase or use of commodities or services shall have the right to compensation according to law.