Unable to reverse a debit order from my account

i am very disappointed with ABSA, i have visited the branch yesterday on the 02/01/2018 and i was told that they were unable to reverse a debit account that was deducted unauthorised from my account. I have trusted Absa for many years and such incidents are things that will make Absa loose clients.the Consultant called Ntsiki is trying her best to update me on the procedure shes trying to help but the procedure is taking forever all i want is my money back.