No reply on credit card limit increase in 2 weeks

I have been a client of Nedbank for many many years, and I have recently app**** for a increase on my credit card limit. It has been 2 weeks and I still haven't heard back from them. I have been calling them everyday to ask for feedback, and all they keep saying is that they will get back to me the next day, and they just never do. Is that how Nedbank treats their loyal clients? I'm hoping someone who wants to open a new bank account will see this, and rather opt to open an account with a bank other than Nedbank. I am now closing my account and moving it to another bank that will value me as a client.