FNB mistakes, Customer left in double debit for FNB mistake....... LIKE WTH????

My debit order for Revolving loan account with FNB was requested to be for the 23rd monthly. My account is up to date, with no unpaid debit order since inception. On the 22 August 2025, FNB decided to send the magtape from my bank account on the 22 August, as opposed to the 23rd August, as per the contract agreement I have with FNB. On their side the payment was unpaid, but guess what on the 23rd of August they debited my bank account and it was successful. Guess what, I have been getting calls from FNB from the 25th August 2025, that my Revolving loan account was in arrears, I asked how. The caller then picked up that the issue was on their side and I was promised that this matter would be resolved. I thought nothing of it, NOPE. I got smses that my account is in arrears on the 26/08/2025, 9/09/2025, 14/09/2025, I have been calling, I have been called and I thought the matter when I was told a manager will remove my account from getting these smses as it is paid up to date. Guess what, I got debited double this month, as if my account is in arrears which is not, I called on the 23rd September been told it will be fixed in 24 hours, 25 Sept called again, was told dont worry tomorrow the funds will be reversed to your bank account. I called again now, was tranfered to collections I was then told it is not the collections side, but admin side. This will take 7 days to resolve as they need to check if my account was never, ever in arrears, meaning that FNB did an error and I have to suffer and patiently wait for FNB to say OPPPSIE Daisy, we wrong and then when FNB decides when they can refund me the money they should have not debited from my bank account in the first place. Can someone please make this make sense. I am not happy honestly. Can someone from FNB that can get and understand my story and feedback to me call me and I am not waiting for 7 days for you to fix your issues shame angeke,