***** transaction

Hi guys...I still having a problem with the bank Fnb...I have lost the last money that I had and now the bank doesn't want to refund me...I told them that there's a person inside the bank who is working together with theft to ***** people's money they think I'm joking...my money was withdrawn two times on 27th May 2019 the massages I saw from the App told me that the money was withdrawn at Jeep town...then on tuesday 28th May the money was back into my acc and the transaction ***** was removed from my statement...then on the 29th May I found that the money is gone again and the transaction has changed and now it says the money was withdrawn at Malvern...I don't trust this bank anymore if I don't get my money back that mean i have to close it because it's shows that I'm going to lose alot of money on this bank..