AEDO debit order not revervisible

I have been a client at Capitec bank for +- 5 yrs and I have always been happy with their service as its the chepest bank I have ever banked with when it comes bank charges,until this sartuday the 14.07.2018 when a R2000 debit order came through my account and I went to the branch and the branch called the call centre because they couldn't reverse it and the call centre said it can't be reverved cause its AEDO ,all I want is my money. I don't know anything about AEDO I just want my money. the bank gave me a number to call and I called that number then I was reffered to another no that there is no answer, am really worried as am getting paid mt salary in 10 days time ,will this AEDO not hit me again, am even thinking of changing a bank as this has inconvenienced me and my family so bad.