Disptribute YOUR money as if it is THEIR OWN

I instructed Standard Bank to please CANCEL (not postpone) all my Debit orders as I wanted to be in control of MY money. They acknowledged receipt of my instruction and all went well until I had a positive balance in my account and without notifying me, Standard bank allowed debit orders to go off again. I went into the branch personally since they don't return calls and I wrote a letter as per their request. The response I received is as follows