Debit Order deduction

Nedbank had debited a 1/4 of my salary after i explicitly told them I cannot afford to money to be deducted off my account other than the agreement in place for R61.81 per month. R1719.00 was deducted off my account without any any arrangements nor my explicit permission. So i continued to shut down the account and withdraw the balance of my money, which was very little, and I'm unable to buy food for the month. If that wasn't enough insult to injury they wanted to deduct more money off. This is a typical don't care attitude. I have had to go to another bank to open up another account. The consultant said she doesn't care and i must go and open an account elsewhere. 011- ********** Sthembile **********