FNB is sucking me ignoring any attempt by myself to ask for their assistance

An unauthorized debit order went through on 15 April. The company continues to deduct an amount that we have not agreed on. I have made contact with FNB via the following platforms: Chat on the App, 3x emails to FNB complaints, Various emails to and from a banker, the banker advised me to reverse the funds via the Covid 19 icon on the App. I have done this too. FNB refuses to reverse the debit order. Plus, due to the unreversed debit order that has previously been stopped FNB has charged me R125x3 for three debit orders that did not go through. This looks like an attempt to make money by FNB. My payday is approaching and I fear to think how many unauthorised debit orders will go through. FNB reverse the debit order and you have no right to take R125 x3 when you know the reason the legitimate debit orders are not going through. I thought you mentioned that you did not charge this much anyway, but with me you have been charging R125 all along. What kind of a business are you? Sending me reminders of an overdrawn account when you are supposed to reverse my hard earned cash. The audacity to use your poor service to make money.