UNAUTHORIZED CHARGES AND UNHELPFUL STAFF

If there's one thing FNB and it's chat staff provide is unprofessionalism and treating customers like we're puppets. I spoke to An agent by the name of Andrew, whilst I EXPLAINED exactly what my issue is and I explained issues I picked up on my statement he kept on asking me "did you check your transaction history". I even asked him to explain if he sees something different to what I explained and still gave me condescending and vague responses. I tell him to reverse the charges which were made on my account including the transactions, he asked me for reasons for reversal which is the same reason I gave when I first messaged. He then says "I need to chat again with another agent at 8am". Please tell me why would he then want to waste 30mins of my time only to refer me to another agent who does the same thing as him?... How is FNB honoring a transaction for R1100 on an account already on a negative and then charge me a R200 fee for honoring that transaction. There's a reason why I didn't sign up for an overdraft account. Please reverse those amounts because they weren't catered for already