I recently received a replacement for my expired credit card through the mail. I had already started using this card when I received yet another card. I am now a little confused about which card I should be using, and I was wondering if I should have one of the cards cancelled. Would it be adequate just to cut up the second card?Unfortunately, I am housebound, so I am unable to visit the bank in person. I should be most grateful if you could advise me on this matter. I look forward to your response.