Kotak Mahindra Bank — Hidden Charges On Kotak credit card

Hi,

I have taken a mojo card of Kotak Mahindra Bank, while taking the card I was told that its a free card, its not even 3 months that I got the card, they have charged the annual fee of rupees 1180, for no reason.
And the customer care executive was so rude, she is directly telling nothing can be done and she won't take any complaints regarding this matter.