HDFC Bank — hdfc credit card one assist fees

Address: Pune, Maharashtra, 411028

Hi,

I have get a new hdfc credit card. But out my surprise rs. 1299/- charged on my credit card account without any kind confirmation/intimation to me as oneassist membership fees. Now i am struggling with hdfc customer care to get it deactivated for last 2 weeks for this unwilling membership fees reversal.
I need a help to get this membership deactivated and do a reversal of membership fees.

I want a refund.

Thanks