HDFC Bank — hdfc credit card against one assist membership fee

Address:

New Delhi, Delhi, 110074

Received sms from hdfc bank that rs-1299/ on feb 2017 deducted from my credit card to one assist membership fee. I spoke to hdfc credit card customer care, and complaint them regarding this matter they said speak to one assist team, they will refund your amount and cancel this service, then i spoke to one assist customer care for cancel my service, on that time they confirm me that i am cancel your service and refund your amount whatever we charged, i said ok, then i stop using hdfc card due to this activities. But after six month i got mail that they dont reverse my amount and hdfc also charged for not paying that amount, now this amount became around rs.6000, hdfc credit card persons now touchier me to pay this amount, i dont even know the company and this kind o[censored]nsolicited charging of my credit card and use of my card by the company is really a criminal act and the co.
And who the hell are you to care about me.. I want my money back. Dont dare again to do this.
Even i got confirmation by one assist that they reverse all the payment, then still hdfc send me legal notice. Please do the needful on urgent basis

Please please resolve this problem asap
Name: nikee kumari
Date of incident : feb. 2017
Hdfc credit card no. [protected]
Mobile no: [protected]
Email : [protected]@gmail.com