Very bad service and missing money all the time

I did a withdrawal on the 16th of December for R1000.00 which the bank send me two notifications of the same amount and then after a few minutes I received a message to say they fixed the wrong withdrawal and the money was paid back to my account, then I checked my balance but still the money was still missing then I called and reported the incident but they never called till I called them around the 28th then they said they still investigating to my surprise the money reflected on my bank statement but they didn't pay it back. Then a consultant called and said they paid back the money but still the balance was saying something. So please help cause I need the money for my child's stationery and they don't even communicate