ATM deposit jam

Atm no 6286. Date 24.01.2016. Time ard 1035. Branch Mvusuludzo Mall money was deposited in my Acc and the ATM had a jam it returned 900 but R3100 was never returned. On Monday went to the branch reported the issue was told it will take at most 72hrs it's over a month now that money is not returned. Who is responsible in giving back my money it's so worrying am a prestige banker but these people do not have customer care. That money was for fees and I had to run around our money must be safe in the bank not this kind of service