Unfair services

Hie how are you.I was a client of FNB but i was not staying in south africa.After months of using my account i got a letter from them saying they want to terminate my contract with them and i asked them the reason they just sent me a document which really wasnt clear as to why my relationship with them was being terminated .I tried reasoning with them and calling them but they did not care to hear me out.On the 11th of june or july i think my account was closed And i ddnt have any funds in the account.I just kept quiet because i had seen that these people dont even want to entertain my story....I started getting emails from them saying thatt they want certain documentation from me so that they re- activate my account and it was now about a montg they had closed it.This really crippled my business bit time because i asked myself why then did they rush to close my account when all the wanted was documentation from me because they could have just asked those from me first.I sent everything they asked me to send and on the 16th of august 2022 FNB caller me to Say they are Re- activating my account and i should deposite money in it and i should start using it...I did as i was told i even have emails confirming the re- activation.About a week later of using the account my account was then closed again and this time it had funds.When i called to ask What the problem was they were not very friendly they were not clear as to why they had closed it again.I called them several times and sent hundreds of emails but i did not get any solid response..I Was then called by One of their Workers who went by the name of Mr Nxumalo whom i explain to him that if you knew you were going to close my account why then did you open it in the first place because i did not commite any ***** or anything because my business is a very simple business and i have every documentation that you people need.The Guy rep**** and said "its not my problem that your account was closed and from now onwards i will tell my stuff not to entertain you if you want to Talk to Fnb you will only send emails otherwise we dont have more ro say to you".I felt like im being Mis treated and they wanted to **** me my money because Why then would they re-activate my account to them close it after a week without any prior notice or Phone call as to why they are doing so.FNB is a good bank but their customer service is very poor and Its like they have a big problem with foreign people opening accounts because the way they treated me was really not fair.I asked them if i had done any ***** they said no or if i had recieved ****** money they said no but the reason as to why they did this was really unclear.My business was really affected bigtime because i lost almost all my clients because they were now thinking that Im a ********* or maybe im a **** which was completely not the case.I lost hundreds of thousands of rands in form of tenders because the people nolonger trusted me because of this issue...even up untill now they really did not even care to even call me and we talk or anything...I felt like im really being ****med because why then would you re-activate my account to then close it again.....I dont know how i can be assisted about this issue ...my email address is *** account name is *Cashflow enterprises* my phone number is +*** or +***3

But my Zim number is the one that is always active as im always in Zim but i Go to SA here and there to sort out any issues concerning delayed orders etc