BEING BILLED FOR A CREDIT CARD I NEVER RECIEVED

I app**** for a credit card about 3 months ago and have not received the card to date, i keep receiving calls regarding the card and requested that it be couriered to me. i just received a bill for a credit card i never received or activated. i have informed the call centre on many occasions that my card was never delivered to me and they always said we will get someone to call you back - i never ever received that call. i have had my account with Nedbank for 8years and this is the first time i had pathetic service. i am not going to pay R200 on charges for something i haven't received or signed for or even used!!!! cancel the card and clear the balance as I WILL NOT PAY FOR IT.