Bad service and attitude

On the 17th January went to change my name at the kolonade branch as I recently got married. Everything went well and nothing was said about my card going to be exchanged. Yesterday tried to do a transaction on my credit card it said transaction not available. Today tried buying medication for my child at card declined. Called the bank spoke to a lady by the name of Hallen from credit card section who was very rude to me and explained my story to her and she told me there is nothing they can do to assist me as the card has being selected as replace not update. And I pleaded with her said I must call after 10min she will see what to do. Called back they said she's busy she will call me back. Still waiting for her call even noe. I'm so disappointed about the back and I've been with them for years but after today not sure if I still want to be part of the bank.