Angry fnb customer

I made a cash deposit to a vendor in the amoint of R5300.00 at an FNB atm om 23November 2018. The atm swolled the cash without a slip and the vendor has not received the money. I'm told by the branch that their atms were vandalised and I have to make an affidavit for them to investigate the matter. The problem im having is the slow turn around and lack of interest for speedy service, especially when I have someone waiting to be compensated. It's not right that a bank can take this long to solve such a matter. Its very frustrating