How to complain about charging 20% penalty for Tengming car loan?

If Tengming collects 20% penalty for car loans, it can complain to its competent department, the China Banking Regulatory Commission. According to relevant data, the automobile installment payment business is generally granted by banks or auto financing companies, which are supervised by China Banking Regulatory Commission. If there are violations of laws and regulations, you can complain to the CBRC, and the CBRC will investigate and deal with them according to law.