Bad service from couple of departments

Firstly on 30 October I noticed an unknown debit order from my account. I contacted FNB and it was reversed and supposed to be stopped also. It was R1414.02, Cell C as reference. I never had a Cell C account in my life. On 5 November 2021 I noticed costs on my account which I am not aware of. I contacted FNB ***** from Australia on the same day. It turned out to be forex costs on payments made to my Australian bank account, which was legit. But then the person also cancelled my cards by mistake. I was not aware of this until I received a notice via the App that my cards are successfully been cancelled. I contacted FNB again 5 Nov 2021 to discuss this. They said that it can be seen that it was cancelled by mistake. I asked for new cards and that FNB cover the costs, as it was their fault. I was then debited with R120 for new cards and CCD Couriers want to charge me R700 to deliver the cards to Australia. This is unacceptable. Today, 16 November the same R1414.02 was debited from my account, Cell C. I contacted Cell C and they are not aware of this. So I contacted FNB again to reverse and stop this debit order. I suspect ***** going on. Cell C apparently knows nothing about this. I have to pay reversing costs also for this. I am disappointed in the way FNB handled my card cancelations and then charging me for new cards etc.