If you buy pirated books, you can complain to the administrative department for industry and commerce, or you can call the consumer association to complain. If it is online shopping, you can also complain to the customer service of the e-commerce platform. If you want compensation, you can negotiate with the merchants or through arbitration, prosecution and other means.
Legal basis:
Law of People's Republic of China (PRC) on the Protection of Consumer Rights and Interests Article 39 Disputes over consumer rights and interests between consumers and business operators can be resolved through the following channels:
(a) negotiated settlement with the operator;
(2) Requesting consumers' associations or other mediation organizations established according to law to mediate;
(three) to complain to the relevant administrative departments;
(four) according to the arbitration agreement reached with the operator, submit it to an arbitration institution for arbitration;
(5) bring a lawsuit to the people's court.