Product: Credit card or prepaid card

We made multiple purchases from XXXX & XXXX for a construction project with 6 month interest free agreements and some purchases over {$1000.00} with longer interest free periods. All 6 month balances were paid off through the company 's bill payment system on their web site on or before the promotional balance due dates. Instead of crediting the payments to the debt due the soonest, as their payment policy and customer service agents advised they would, some of the payments were credited to later due promotional balances and remaining balances on expiring promotions were moved to a revolving account with a 29.99 % interest rate. 
We tried to get Comenity to correct the problem without success. The latest statement received no longer shows the revolving account, but still shows the illegal interest charges. Today we spoke with customer service agent XXXX about getting the interest removed, but was told that the revolving balances still exist and that the interest could not be removed. 
Here are the promotional balances and expiration dates from our XXXX Billing Statement : Promotional Plan ( s ) ENDING SOON ] You must pay your Plan XXXX balance of {$4.00} in full by XX/XX/XXXX, and also pay your Minimum payment amount by the Payment due date shown on this statement, to avoid paying accrued interest charges. 
You must pay your Plan XXXX balance of {$45.00} in full by XX/XX/XXXX, and also pay your Minimum payment amount by the Payment due date shown on this statement, to avoid paying accrued interest charges. 
You must pay your Plan XXXX balance of {$66.00} in full by XX/XX/XXXX, and also pay your Minimum payment amount by the Payment due date shown on this statement, to avoid paying accrued interest charges. 
You must pay your Plan XXXX balance of {$290.00} in full by XX/XX/XXXX, and also pay your Minimum payment amount by the Payment due date shown on this statement, to avoid paying accrued interest charges. 
You must pay your Plan XXXX balance of {$59.00} in full by XX/XX/XXXX, and also pay your Minimum payment amount by the Payment due date shown on this statement, to avoid paying accrued interest charges. 
You must pay your Plan XXXX balance of {$16.00} in full by XX/XX/XXXX, and also pay your Minimum payment amount by the Payment due date shown on this statement, to avoid paying accrued interest charges. 
You must pay your Plan XXXX balance of {$100.00} in full by XX/XX/XXXX, and also pay your Minimum payment amount by the Payment due date shown on this statement, to avoid paying accrued interest charges. 
You must pay the balance {$3300.00} of your Plan XXXX in full by XX/XX/XXXX to avoid paying accrued interest charges. 
Here is the payment activity from the XXXX XXXX XXXX site : Transaction Details Amount XX/XX/XXXX PAYMENT-THANK YOU - {$110.00} XX/XX/XXXX FINANCE CHARGE {$5.00} XX/XX/XXXX PAYMENT-THANK YOU - {$110.00} XX/XX/XXXX FINANCE CHARGE CREDIT - {$4.00} XX/XX/XXXX FINANCE CHARGE {$4.00} XX/XX/XXXX PAYMENT-THANK YOU - {$33.00} XX/XX/XXXX PROMOTIONAL TO REVOLVING {$82.00} XX/XX/XXXX PAYMENT-THANK YOU - {$88.00} XX/XX/XXXX PAYMENT-THANK YOU - {$67.00} XX/XX/XXXX PROMOTIONAL TO REVOLVING {$37.00} XX/XX/XXXX PAYMENT-THANK YOU - {$280.00} XX/XX/XXXX PROMOTIONAL TO REVOLVING {$56.00} XX/XX/XXXX PROMOTIONAL TO REVOLVING {$35.00} XX/XX/XXXX PAYMENT-THANK YOU - {$100.00} XX/XX/XXXX PAYMENT-THANK YOU - {$150.00} XX/XX/XXXX PAYMENT-THANK YOU - {$160.00} XX/XX/XXXX PAYMENT-THANK YOU - {$170.00} XX/XX/XXXX PAYMENT-THANK YOU - {$180.00} XX/XX/XXXX XXXX XXXX XXXX PROMO RETURN - {$31.00} XX/XX/XXXX XXXX XXXX XXXX   PROMO RETURN - {$32.00} XX/XX/XXXX XXXX XXXX XXXX  PROMO RETURN - {$34.00} XX/XX/XXXX XXXX XXXX XXXX PROMO RETURN - {$240.00} XX/XX/XXXX PAYMENT-THANK YOU - {$180.00} XX/XX/XXXX XXXX XXXX XXXX PROMO PURCHASE {$150.00} XX/XX/XXXX XXXX XXXX XXXX PROMO PURCHASE {$31.00} XX/XX/XXXX XXXX XXXX XXXX PROMO PURCHASE {$79.00} XX/XX/XXXX PAYMENT-THANK YOU - {$150.00} XX/XX/XXXX XXXX XXXX XXXX  PROMO PURCHASE {$340.00} XX/XX/XXXX XXXX XXXX XXXX PROMO PURCHASE {$86.00} XX/XX/XXXX XXXX XXXX XXXX PROMO PURCHASE {$98.00} XX/XX/XXXX XXXX XXXX XXXX PROMO PURCHASE {$24.00} XX/XX/XXXX XXXX XXXX XXXX PROMO PURCHASE {$4300.00} The extra payments made on or before the expiring due dates were not fully credited to the expiring promotional balances and moved to a interest charged revolving account.