Ridiculous Bank

I've given Absa bank one month notice to move my Absa personal loan debit order. The person that helped me via call centre did not do his job. He put in the wrong account number and my debit order date was not changed. The next month I had to call again to arrange to move my debit order date. Due to salary date change. The contract I signed had a installment of R3900 pm. Today wrongfully Absa bank took off a debit order of R5797 out of my account,almost R2000 more than the installment they are supposed to. I drove to the nearest Absa branch. After waiting in a long que I was informed that the branch cannot assist me. So Absa took my money and couldn't refund me when I needed it. I have to phone the call centre once again, only on Monday,they don't operate on weekends. The time on phonecalls is ridiculous that I've spent. I drove out petrol. I am not.a rich person and need to watch what I spend. Well see what happens mondayday when I phone Absa once again to sort out the issue - at my cost once again. I've lost all my faith in Absa bank of which I've been a customer for more than 18 years. The disappointed and frustration cannot be described in words. Absa why did you take my money without my permission?