ATM Transaction failed

On the 5 of January 2015 I was depositing rental money into standard bank on the ATM, the transaction failed to deposit on the ATM and R300 of my deposit was not returned by the ATM. I went inside the bank to lodge a query and was told that the money will be deposited into the account of the land lord on the 12 of January. The money was never returned into the account of the land lord till today. I have called the bank many times and the answer I get every time I call them is that they will call me after 24 hour, I haven't received any call from them until today. Two weeks back when I called I was told that the money will be deposited into the account within 24 hour. Today I called again and I was told that query is in progress, they have escalated the query again and I will be contacted within 24 hours.