OneAssist Consumer Solutions — cancellation of plan as it was done without any confirmation

I am a hdfc credit card holder and on 12th of feb 2018 i got a message regarding amount 1399 debited from my credit card, i didn't asked for that service, even i got to know about oneassist after my amount was debited from my credit card. I called their customer care executive on 17th feb 2018 to deactivate that service and also to refund my amount, he didn't done that yet. While searching on net i got to this website, i kindly request you to deactivate this service and refund my amount. This should be considered as a crime from this company, as it is debiting the amount directly without any otp, any card number, etc this shows the loophole in our banking system. The strict action should be taken against them. Amount 1399 debited on 12/02/2018 as one assist mfee. Plan:enhanced wa power single plan
Relationship number : 3800858.
Kindly refund my amount.