ICICI Bank — Auto Debit Return Fee Levied even payment made towards my credit card

I am using ICICI credit card since last 4 years and make manual payments at the end of each month before due date
Similarly, I made a payment on 24th OCTOBER and in my CC statement its mentioned auto debit return fee and service charges INR. 1, 748.7. When I enquired about these charges bank said that I have auto debit facility opted on my account and due to insufficient funds charges in my linked savings bank account.

I clearly told bank:
1. I never opted for Auto debit how come it was applied automatically. They don't have any proof to show ...
2.I already cleared all dues on 24th which was before my payment due date.