Call the customer service hotline of CITIC Bank to complain. CITIC Bank is the largest subsidiary of CITIC Group. If there is any violation in the process of handling business, customers can call the customer service hotline of CITIC Bank to complain, which is one of the most effective methods. Citic Bank was established in 1987, which was one of the earliest emerging commercial banks in China during the reform and opening up period, with assets of 8.55 trillion yuan in 2022. It is the first commercial bank in China to participate in domestic and overseas financial market financing.