I had XXXX balance transfers, both with a 0 % promotional balance on my Bank of America : XXXX XXXX XXXX credit card. 
0 % balance transfer 1 - Transaction date : XXXX/XXXX/XXXX for {$2000.00} with a 3 % fee. Promotion expired XXXX/XXXX/XXXX. 
0 % balance transfer 2 - Transaction date : XXXX/XXXX/XXXX for {$1400.00} with a 3 % fee. Promotion expires XXXX/XXXX/XXXX. 
I had made minimum monthly payments to this card. On XXXX/XXXX/XXXX I made a full payment for the {$2000.00} balance + 3 % fee ( {$60.00} ). As of my account statement ending on XXXX/XXXX/XXXX, instead of continuing my 0 % balance transfer ending on XXXX/XXXX/XXXX, I was charged an interest on {$950.00} of " outstanding balance. '' Bank of America refuses to refund the interest and states that all principal must be made to avoid further interest costs - they are blaming me for not paying the full amount even though the balance transfer promotion does not end until XXXX/XXXX/XXXX. I called in multiple times before the promotion expiring to ensure I would not be charged the interest cost. I 've attached my account statements and a document I requested from BOA in regards to how payments will be allocated to my Bank of America : XXXX credit card. 
Thank you, XXXX 
