Atms jamming money and not being refunded

I made a deposit at an Fnb atm (branch atm) the atm cancelled my deposit and did not refund my money. I opened a case the next day at the branch. I was told it will be refunded in 3 days and it happens often. After 3 days I was not refunded. I then went in and was told the previous agent logged the form incorrectly so they redid it. The funds was reversed but not the full amount. R800 short has been refunded. I went in twice after that and I was told it will be escalated and I will be communicated with. No communication was recieved. I then called in and was told to wait 3 weeks for the escalation to take place. This is ridiculous as I need my money. This is time and petrol aswell as airtime wasted. Similar issue happened to a friend. No action was taken until she had to get stern with them.