The grassroots court where the bank is located will sue. According to the query on Hualu.com, civil cases against banks and other financial institutions are under the jurisdiction of the grassroots courts, so you can go to the grassroots court where the bank is located. Prosecution is the right of every citizen. If the cardholder has evidence of violation by the credit card center, he can directly sue and use legal means to defend his legitimate rights and interests.