Shocking Service From FNB

I have been struggling with a debit order for a few months now. It was a problem before the pandemic and became so much worse since lock down. I have tried to contact the service provider yet have had no response from them, and that's when I tried to get help from FNB but they were not prepared to help. I have tried to dispute the debit orders through the Online Banking app yet absolutely nothing has happened. Since then I have laid three complaints. The first time, the man who contacted me basically told me it was my own problem then put the phone down in my ear. The second time, I got through to someone who apparently reversed the debit order, at a R40 cost (which would have been free if I was able to do it on the app), yet it was instantly taken back due to a R250 fine which they said had been reversed. I tried to phone inquiries about this, and was basically on hold for forty minutes. I then laid a third complaint, and the lady who contacted me insisted that I was wrong and no matter what I told her, she kept saying the same thing, which I know is wrong, because I keep track of where my money goes. Now, there have been some very helpful employees at the branches and I am grateful to them, but they can't do anything due to the changes made because of COvid-19. I am still struggling to get my money back and FNB doesn't try to do anything. Another complaint, is their transaction time. I bought supplies with enough money in my account, yet it wasn't processed till a few days later when there wasn't enough funds in the account and they charged me R125 for it. I queried it and was told no I bought something when my account was in overdraft, and because the transaction date showed it came off a few days later, there was nothing I could do. First off, my account wouldn't have even been in overdraft if FNB did their job in the first place. This isn't the first time I've had serious trouble with them. On previous occasions I go to query something and get a completely wrong answer, as if the person didn't know what they were talking about. The service I have received as a whole is shocking compared to the great service my father received from Capitec, even under the same circumstances.