Rbl — Late fee charge on fraudulent transaction

In September, A fraud transaction that was international in nature was done using my RBL Credit card. An investigation was opened post that and was closed in in my favor in Month of Dec 2020. Since a fraud has happened the card was blocked and I also rejected to renew the card and continue with the membership. The amount transacted was reversed but since the investigation took 4 months of time the RBL is now charging me late payment fee for fraud amount.
I have contacted Customer Care of RBL and requested them to reverse the late payment fee since the transaction happened without sharing CARD number and no OTP or PIN sharing was done from my side and that's why I am not liable for paying any amount as the CARD details were leaked from Bank's side. But still RBL is forcing me to pay the late fee.