I tried to resolve the issue with payments online message center to resolve the issue and I 'm not making any progress and I tried to dispute a XXXX day late payment XXXX even though all my payments have been received. I was XXXX days past the due date in XXXX and XXXX and they reported me 30 days late. I believe a double payment was applied towards the principal. I also am being charged a higher interest rate of 27.900 % for not receiving a minimum payment 60 days from the due date of XXXX/XXXX/2015. A payment was due on XXXX and paid on XXXX however ; the statement from XXXX XXXX to XXXX XXXX, 2015 the payment was n't applied- until the next statement- which they state is XXXX days from the due date. Which is misleading and confusing. That is not 60 days- and inaccurate. The statements are made to be confusing to the consumer as when a payment is accurately considered 30 days late. Is it considered 30 days late from the month its paid in or is it late from the payment date on the XXXX th of each month? Please explain. 
I sent them this letter on XXXX XXXX, 2015 : In reference : XXXX day late payment dispute for XXXX 2015-XX/XX/XXXX 2015It has come to my attention that after looking at my payment history there may have been an error on your part in the application of my payments. At one point it appears that you may have not prepaid my account, as I specifically requested and that you have applied a double payment towards the principal, again contrary to my expressed will. Please provide a detailed payment history including dates, application to principal, interest and late fees immediately upon receipt of this request. I will compare the dates and the amounts to my records to determine where this discrepancy aroused. At this point I believe this to be just a bonafide error on your part however ; as it has resulted in a XXXX day late to my credit profile it is a serious matter. Please provide this documentation immediately that I may determine where the application of a double payment to my principal balance as opposed to the prepayment of the next payment arose and thereby your bonafide error was manifested. Again at this point I will review this matter with my Attorney with the understanding that should this be cleared up in an expeditious fashion, there will be no fair credit reporting act violation and no fair debt collection practices violation. 
Thank You for your immediate attention in this matter,