Blatant disregard for clients and unaccountability at FNB

I am appalled by the poor service level standards and lack of accountability from FNB. They have been deducting money from my account under the name "Items paid no funds". I have spoken to atleast 8 different consultants in this week alone, being sent from pillar to post. I have even been to the physical branch where i was advised to call and demand a reversal/refund of these charges. I sat on Monday morning on a call with a consultant by the name of Andries and we went through the matter and calculations. A dispute was launched. I was told i would get information in 24-48 hrs. That was not done. I followed up. I was then told on Wednesday after trying to track him down, that they wanted more info ir motivation for my disputr from him. He said he would get back to me the following day, he did not again. I followed up again today only to be informed that my dispute has been declined. I ask for the reason and he tells me there was no reason given. I am disgusted because ofcourse i am considering closing this account but not before i am told what has happened to my money. These charges are still being deducted even post/while the dispute had been lodged. I continuosly transfer money into this account and im still charged even with a positive balances. I demand answers this is clear theft without remorse when identified.