Disappointed with Woolworths Financial Services

I opened an account with Woolworths 9 years ago and looks like I had debit order set on the account. At the time I was using Absa Bank of which I stopped using the account long-time ago. After a while I used my account of which I made a payment of half the balance thinking since I made the payment I don't need to pay any money further for maybe the next 2 months, however I saw rejected debit order from my old Absa Bank account with rejection fees since the account is not used. I then contacted Woolworths to find out on what are the terms of which I was told store cards deduct based on the 5% of the balance of which I was not aware. I then asked on what was the rejection fee from Woolworths and was told they can't tell me since the rejection hasn't appeared as being rejected. I asked if they can reversed since I wasn't aware and their agent said no because it wasn't Woolworth's fault. I asked for the rejection and no-one seems to know.