Did not do what I asked for.

In November I complete a form at Vodacom KBY so that my banking details will go off on another bank. The person told me that the debit order will go off on the new bank the first of January because I am to late for the first of December. That never happened. My Debit Order failed because Vodacom did not do the changes. I immediately paid my failed Debit Order and I asked the person do I need to pay a fine. he said no. Now Vodacom took R 100 extra this month because they said it is now my fault. It is not my fault. They did not their job!!!