Credit Card application

I was preapproved for a credit card over two weeks ago. Every time I call I get told that it is still with back office and must call back in 2 days time. I am absolutely getting nowhere and waiting so long I mean it is ludicrous. I have submitted all required documents but wait and wait and nobody contacts me AT ALL. How can I make things happen for you today is definitely not living to the standards set by Nedbank. I would rather take my business elsewhere. Reference ***0 is what I have been given and told to wait......and that's all I have been doing for nearly 3 weeks WAITING