legal ground
Article 39 of the Consumer Protection Law
Disputes over consumers' 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.