Poor, poor, poor Service...

So I informed FNB, my team of bankers, that there was an error on my banking app, namely, my old Credit Card account all of a sudden reappeared. Strange when I upgraded to a Premier Credit Card account ages ago. I was told by said team of bankers that it was normal - "it just takes some time for it to be removed" they said. I knew this was inaccurate but was repeatedly told the same answer when I tried to challenge it... But then, later on, when my Credit Card funds became exhausted it came to light that my Credit Card had been renewed and my card had been activated in Newtown. Strange considering I live in Cape Town. Since then I've had no feedback from FNB regarding this, how it happened, an apology nothing. I understand in these modern times that banking *****, glitches in the system, etc are to be expected. What I can't excuse is FNB's reaction to its clients regarding such. The inconvenience of the above goes without saying. Additionally, I've lost ebucks on purchases because my Credit Card was renewed as a Gold Account and not my Premier Account. This is all very poor. With all the other changes that FNB is making, especially regarding the Ebucks, I'm inclined to start looking elsewhere for a bank.