Fees or interest: Credit card

I submitted a written billingerror dispute to Bank of America regarding incorrect interest charges, misapplied payments, and a cashadvance classification error. Instead of addressing the dispute, the bank sent generic statements that did not respond to the issues raised. I sent a followup letter correcting their response and restating the dispute. Bank of America has not acknowledged or investigated the dispute within the required FCBA timelines and has not provided any substantive response. Basically, they were taking my payments and applying them to the 0 % balance, instead of the balance with the highest interest rate. These were payments made outside of the minimum payment, which all should have gone towards the highest interest balance.