HDFC Bank — cancellation of one assist & refund of money

Address: Mehsana, Gujarat, 384001

Cancellation of one assist & refund of money
Without any consent from card holder, hdfc deducted money for plan activation.

I dint get any call to activate this one assist membership. But the one assist mfee of rs.3757 is automatically debited from my hdfc credit card (Ended with 6393). Also, one credit entry is shown as dial an emi (Smart emi) of rs.3757.

Don't activate this type of subscription in future without my knowledge/consent.
In view of the above, i request the hdfc team to reund the amount of one assist mfee of rs.3757 at the earliest.in case of non-refund, i shall cancel my credit card and hdfc account with the following details:

Email id:- [protected]@gmail.com
Mobile number:- [protected]

Kindly acknowledge with a prompt reply.