HDFC Bank — about credit card charges

Dear sir, my name is ashishkumar kotadiya. Once i went to the hdfc bank for transaction in my account and one executive told me that if i had go with cradit card then i have many benefits. And she gave me all details of that like its lifetime free after first year transaction of 20000 and 2nd year transaction of 50000. And i had purchased it from her. After that i had almost spent above 30000 first year and also above 75000 2nd year. But i got charges of rs.695 from the cradit card bill. And when i go to the bank, no one listen my problem and everybody told that give the online complaint. When i had tried for call the cradit card customer care, there is no reply or also there is not any option to talk with cardit card customer care executive. Its so mentally herrecement for me. So please i request to solve my issue and cancel my unknown charges for that also..