RBL Bank — first time delay payment and not getting the reversal

Address:

New Delhi, Delhi, 110015

My card number [protected] Puneet parashar
My concern is as per last statement i have not make the payment as per the due amount i think have made short amount of 6 to 7 thousand so this is the first time i have delayed on my payment, I never ever delayed on my payments. As per customer gesture please reverse my charges and in future this thing wont happen from my side.