ATM malfunction! No ATM dispute number to call

On Monday 28/12/2015 I went to do a cardless cash deposit for a Nedbank account holder. It was around 16:30pm going to 16:40pm. The bank was closed. I punched in all details as well as my reference and all seemed fine. The machine then asked me to insert notes, after that the machine read VALIDATING NOTES for a few minutes then MACHINE FAILURE. There were still staff inside the bank and they could see that I was struggling but no one did anything. I phoned the call centre number ***, no one seemed to know how to assist me. I was then told by some staff members that were leaving that I should tell the account holder to check his account after an hour. I did that but the money was not reflecting. He personally phoned the bank in the morning and they told him it will take 6 working days for them to investigate! How absurd this is! What a huge inconvenience it has caused!!! I've used other banks to do a cardless arm cash deposit before and never have I encountered such misery!!! I went inside the bank to log a query, I was told that the machine would be balanced same day and that I would receive a call from the bank! I'm still waiting even after so many calls I made!!!