Poor service!

I wrote a complain to FNB regarding the two amounts that were deducted from my account which had no money at that time which left my account on a minus 27 000plus. These amounts were R20 504,39 Dollar Trifft and R5 852,52 Avis l. I went to FNB Soweto protea gardens spoke to the manager and she advised I put in a dispute form. I told her that I’ve been putting disputes however FNB always takes three months to respond . The dollar thrift purchase was reversed however Avis was not reversed of which I don’t understand why. I explained on my last complained that I did not authorize those transactions especially cause my account was on a minus! Please sort this out ASAP. Dealing with FNB it’s exhausting you are so quick to hand me over as my account is still on minus but no one called to inform me what happened to the other transaction please sort this out I am sick and tired of not being able to bank cause of this minus 7kplus on my account it’s accumulating monthly and it’s reflecting bad on my name ! 2. 13 March 2020 two transactions took place in Victoria falls an amount of R6787,72 and R84 846,39 I went to FNB to report all this and I was told to fill in a dispute form for the R6787,72 and the agent advised me that the transaction for R84 846,39 was a huge amount and I needed to speak to my banker about it. I explained that I went to Livingston I was never at Victoria falls and I have a proof of my flight ticket departing from Livingston to Johannesburg on the day Flight number SA 49 departed at 13:00. After a few months of all this admin I received an email stating I should contact the merchant myself !! So basically my money is not safe with FNB, they authorize huge transactions without even contacting the client !! And they not willing to assist reverse the funds what kind of a bank is this...I want someone to sort all this mess up cause I’m tired of going back and forth with this unreliable bank !!! I want my money and my profile sorted ! Please note I am not willing to pay for the re-occurring bank charges because of your negligence!