On asking them how (on earth) they would find out if the card was used by me or by any of their executives, they declined to give me the information saying it was confidential. Thus, I finally got the card cancelled (with a lot of difficulty since they initially refused to believe that I had submitted the card for cancellation in one of their branches - wonder where the application went along with the broken pieces of the card - another security risk - when they had refused to give any receipt/acknowledgement at the branch). So much so for the standards of a "foreign" bank. The more serious problem is: This is the problem with almost all the banks, whether Indian or foreign, operating in India. Had I not had choices (other cards at that moment), I might have been forced to give out such privy information without complaint.