I dun understand.. if ur card gives u so much trouble.. why not just throw it back to the bank n get it replaced?
I had some problems with my Singapore Citibank card only becoz i placed it too near to my PDA phone ( i like to clip it in between my magnetic closure of my phone).. that definitely kills the strip. Some machines may have issues with reading it.. but not that often plus i have 2 cards from CItibank so it wont be too much of a hassle.
HAven tried my Citibank HK card yet.. just collected it frm the post office today. I'll let u know if it screws up too..