Delayed payment of refund from closed account

Good day I'm a former client of FNB and in 2023 my account was closed due to a R700 deposit that was made into my account that was considered *****ulent or something like that. I did everything that was asked even went to police for an affidavit where I stated that I another aware of any *****ulent activities in my account and that I did not know that the person who deposited the above-mentioned R700 was involved in *****ulent transactions. My account was closed with the amount of R14000 still in my account. The R14000 was not in question so I was supposed to receive those funds. After 2 years this issue is still not resolved and I've been going to different branches and all of them say the same thing the money is still there but they do not have access to the money and that they also do not understand why because the R14000 has nothing to do with the deposit of R700 that was flagged as *****ulent. After numerous emails, phone calls and branch visits there is still no resolve. That period in 2023 i just went on early retirement and was awaiting my pension payout, so that R14000 was supposed to support my family during that time. I nearly lost my wife due to financial difficulties during that time. FNB never responded with a clear way forward even recent emails that was send was never rep**** on. I think 2 years was enough time for them to sort out this issue. I've been using fuel and airtime and data begging them like a begger and I feel this is highly unprofessional for a bank that claims to have such high standards when it comes to client service. I would like this issue to resolved please if you can help because im even considering a law suit against FNB for my financial expenses and suffering trying to resolve this issue. I hope you can HELP PLEASE