I made my payment to my Citibank MC on the due date of XXXX XXXX, 2016 through the phone system and received a confirmation number of XXXX. However, I was very surprised when I called to make my payment on XXXX XXXX, 2016 to find out I was charged a late fee of {$25.00} for my payment on XXXX XXXX, 2016. I called and the Agent told me the payment was received on XXXX XXXX, 2016 and not on XXXX XXXX, 2016. I told him I received a confirmation that the payment was made on the due date of XXXX XXXX, 2016. As I usually make my payment on the phone system the XXXX of every month. 
