ICICI Bank — Auto debit charges in last 5 statements

I'm using an ICICI credit card and paying my card dues. I noticed recently that in the last 5 transactions AUTO DEBIT CHARGE is levied, a service which i have not enabled. It was enabled without my concern and approximately 8000 INR has be levied as charges in the last 4-5 bills. This is unfair and i brought it to Bank attention to revert that charges. I tried the customer care through phone and the they ask me to wait and cut the phone. It happened 3 times. iI realised that they did that deliberately. It was extremely frustrating for me and felt embarrassed and helpless. I mailed customer grievance cell and i didn't got any response despite posting complaints twice. The form didn't even returned Complaint id to follow up further. Look at the attitude of a so called large bank in India. In fact i'm a customer since 2005. Such a poor attitude from a large bank. Already they levied huge interest for the balance and on top of this they charged AUTO DEBIT CHARGES. I would soon switch over to Axis or HDFC. ICICI is corrupted nowadays.