3 Week and still not approved

I have waited long enough, my patience has run out. A simple credit card limit increase that has turned into the most complex thing Nedbank has ever come across. I have spoken to many call center agents. The agents all at a loss for why it hasn't been approved. Yet the call center never keeps you informed about what is going on. When I finally get trough to the same guy that helped me last time and who asked me to forward the documents to him. He says its Nedbanks policy, they are not allowed to communicate directly with clients via email. And all I asked him in the email, was did you receive my documents. In my opinion he could've phoned me to say its been received atleast. I will not be banking with this bank anymore. As soon as my card is paid up, I will close the credit card.