I have an existing credit card with standard bank for over years, have never missed a payment since

I have an existing credit card with standard bank for over years, have never missed a payment since. I asked for a credit limit increase, they approved it and confirmed telephonically that funds will reflect or will be loaded within 3 working days. I called them 5 days later for an update, and I was told they are unable to get hold of HR to confirm my employment and that I must rather do the application at the branch. Went to the branch, another credit check was done on my profile was told all is in order and that funds will reflect the next day, non of that happened since the 18th of July, communication is non existent, no care at all for their customers. As a result i will be canceling everything I have with standard bank and taking it elsewhere.