Non refunded money - R6000

I have lost R6000 in April to FNB due to an unsuccessful withdrawal - FNB sucks I logged a complaint with the bank manager Luya Myeko on the 30th April who did not call me/email me back with the outcome of my complaint - I went to them to follow see on how that can assist me further as I needed my money back I have kids to feed, school fees to pay and needed transport money for everyone. To my shock they left my complaint to the ashes, Yesterday 30/5 I visited the bank to get the details of my complaint to take it with Ombudsman as you can't get hold of any branch over the phone. One helllll of experience to be told by a call center assistance that there is nothing they can do I have to visit the branch. After getting hold of Israel, Luya's manager I started getting calls from everyone to say that they still working on my case. Today at 12:40 Rushka I could get his name called me to say that they can offer me R3000 as a gesture as there is nothing they can do because it looks like someone that did a withdrawal after me got the money. But I mean I waited for more than 5 minutes waiting for the ATM to give out money and it didn't instead it went back twice to the 'Welcoming' screen - I am a bread winner for my family I need my money can someone help me. I want my account out of FNB after getting my money!