HDFC Bank — cancellation of one assist membership

I am a hdfc bank credit card holder.
The bank has auto debited rs. 1299/- from my credit card number ending with 5674 without my concern on date : 07/11/2017. I am not interested about this service and don't want this membership any more. So cancel the membership and refund this debited amount of rs. 1299/-

One assist relationship number : 3014885
Name :- brijbihari lal
Mobile no :- [protected]
Credit card number ending :- 5674