Consumer complaints through 12315 are useful.

"12315" is a dedicated hotline for consumer complaints and a national Internet platform. When your rights are infringed and the party being complained against is under the jurisdiction of the industrial and commercial administrative department; when your legitimate rights are infringed during the consumption process; when you find counterfeit and shoddy goods and "black dens" that produce and sell counterfeit and shoddy goods; when you find false advertising and deceiving consumers, you can call the 12315 complaint and reporting hotline, and relevant personnel will help mediate disputes. If economic violations are found, they will be investigated and dealt with according to law.