JPMorgan Chase Credit Card Complaint

JPMorgan Chase Credit card department,

Late fee Connecticut

I have been charged late fees - times recently by Chase, ( -/-/15, -/-/15, and -/-/15 ) even though I have paid the due amounts ; will upload records of payments, but have shared with them too. I wrote them to ask to reverse the fees, but they reverted only a - -, for payment made due -/-/15, because my checking account online record ( from - ) shows the payment was indeed completed on -/-/15. Yet a - late fee was applied even though I paid the regular due amount before the due date -/-/15 ( I attach if possible to upload all records and correspondence ). A new - late fee was applied now on -/-/15, even though, again, I paid the due amount, even including their artificially increased amount of $100.00 : $53.00 ( delivered on -/-/2015 ) and then $50.00 ( delivered on -/-/2015 ). I understand Chase desire to increase revenues by applying late fees, but in my case these were not justified : payments were submitted to reach them on or before the due dates, and they did. On the other hand, I have asked my checking account bank, - - Bank, why it takes even 5 days sometimes for an electronic payment to travel from them to another bank for which there is already an established payment route.