Worst bank and service ever

Being overseas I needed to transfer money and then needed an otp number but that was sent to my SA number that no longer works. I can't change my own details and I contacted them via the chat and was told they will change the details and it will be working in 24hrs. This was on Friday 14thOctober2022. By Monday nothing had been done so I contacted again, sent from person to person with no help. Contacted again on Tuesday and was then told I needed to fill in a form not one of the previous people I spoke to since the Friday had informed me about this form or given me a ref number for my problem. So I then completed the form and sent it with the requested documents to them and was told by the chat banker it can take 24-72hrs. I have emailed and chatted since and have still not been helped or answered. I'm stuck and can't use my money because of this stupid otp number. This is the worst bank I have ever had to deal with. Giving a 1 star rating is still too good for the epicly terrible service I have been getting. I don't know who to contact anymore to get this sorted out. No one answered me from my email I sent with my details, confirming if they received it or if everything is correct, I have emailed again to find out the status and still nothing has been done.