Deposited money jammed on ATM

Standard bank Reference ********** 516. On the 16th of February 2018. I.was depositing cash at the Atm outside standard that is inside Montclair mall. My money was rejected by the atm , and came back short with R400 which got jammed in the atm. After few minutes of waiting at the atm I then went inside the bank to lodge a complaint about my jammed money. My complaint was lodged on the system and I immediately received an sms with the above mentioned reference . which was stating that my issue will be resolved by the 23rd of February 2018. Another sms came in on the 26th stating that my complaint is being processed. To date I have not heard anything from Standard bank despite the numerous calls I've made . Every time I called I'm told that my complaint is being escalated.