Atm took my money and I still don't have it!!!!

I tried to deposit a large sum of money via a Atm at the Davenport branch in Durban, Glenwood last Thursday 13th June. While the Atm was counting the money it all of a sudden went offline and I was given a slip to say that they apologize for the inconvenience but they cannot help me. I was totally shocked as all I had was a slip telling me that they cannot help me but my money was now in the machine and my account had not been credited with the amount. I asked a security guard on duty and he said not too worry, I must just come to the branch in the morning and they will sort it out. I arrived at Davenport branch in the morning as the doors opened. I was told by someone from fnb to fill out a form and she made a call to someone who said they had Checked the atm and they had found the money. I was then told that the money would be credited into my account. Today is Tuesday 18th and I still have not received my money. The lady I dealt with at the bank gave me a number and her name and said I can call if I have any issues. I tried to call to be told that I was at the call centre and the branch cannot take calls. I have since tried numerous times to find out what's happening but I keep getting fed different stories. I keep getting told to go into the branch but unfortunately I work and don't have the time to go to the branch. This is absolutely pathetic service from FNB. This is my money yet I cannot get it?? Unbelievable!!!!!!!!