Nedbank -unhappy customer

I have gone to this branch three times to change my telephone number. They can't seem to be able to change the number so that my sms notification comes to the new number. All my financial transactions are being sent to my old number which is being used in the office by different people. Nedbank says that I must speak to the card division to change the cell number,although they can't change the number for my cheque account. Card division says it can only be done at the branch. In the meantime my salary, balances, ect isn't personal anymore. I don't understand. Is this the first time that they have to change a cell number. <br>