HDFC Bank — credit card

Address:	560100
Website:	hdfc bank

Hi,
I was issued a hdfc bank diners club international credit card last month. Before issuing the card i was promised that it would be a free credit card and the amount to be paid after each year will be 0.
But when i received the card to my surprise i found that i need to pay rs.1000 each year to continue to use the card. Although 1000 bucks is not a huge amount for me but its about the breach of trust. So i applied through the credit card closure form from a hdfc bank at phase 2, electronic city, bangalore on 29th october.
It has been more than 20 days but i am yet to get any response regarding its closure.