Misleading information, pathetic service!!

I have a Personal Loan with Absa, and have a debit order. I called the loan department in the beginning of June to ask if i can pay every time that I get my weekly income, instead of the month end debit order. The agent assured me this was fine, and that the debit order would not go off, the installment would merely be debited form the loan account. Come the end of the month, GUESS what the debit order went through, lucky there was no money, but now I see that is says I am in arrears!!?? Called again to ask what is going on, the agent assured that he would cancel it and correct the arrears. and he would call me back this was 290615. No feedback, Called ***5 told the situation, very rude agent, spoke to me as if i am ***********!! explained to me why it happened, I know why it happened since i got wrong information, nevertheless he said he would correct is also and then hung up??? I got funds this week AND to my SURPRISE ABSA DEBITED MY ACCOUNT!!! ARE you INSANE WHY ?? WHY would you! Called twice!! Twice to cancel it, and yet it was not!! I want my money back, and refuse to pay penalties (relating to failed debit order or retrieving my money) for ABSAs incompetence! disappointed