Kotak Mahindra Bank — Fraudulent Transaction Complaint

I have been holding a Kotak Debit & Credit card, since the last 5+years. I wish to bring your notice that an amount of INR 819 (10th Feb 2021) + INR 819 (10th Mar 2021) = INR 1638/- has been debited from my credit card. which was not executed by me.

I requested to kotak, to refund the amount & stop unnecessary transactions on an immediate basis.

And, I temporarily blocked my mobile banking, net banking & other services. so, enable all the services as well. I sent email on 10th March 2021, but still i didn't receive any reply from the bank. the response was very poor service.