waiting for atm refund 30 days is so ufait towards any customer

I withdrew money at an garage atm yesterday just a few minutes before 5, got the sms that the money is withdrawn. as the money was about to come out the electricity went out. when the machine was on again the money was not available. I phoned the bank, they logged a call and will contact me. keep in mind it was R1100 and litterly the last money I had in my bank I was suppose to pay the aftercare. this morning I phoned just after 7 they still have not given the call to a consultant. phoning now again they 7 tell me in investigation will be done, looking at 30 days. what must I do now? its not small change its R1100 and I need the money and turn around time is 30 days. I honeslty feel that this is the worst that can happen to anyone and they just have no remorse.