Unfaithfull Debit orders FFW

I have notified FFW last month on the 5th that my Banking details have changed as i called them and they confirmed it has been updated on their system???which was appaerently not .... seeing that i got sms tonight that they have debited me from my old Standbank Account ?i am really furious I am a loyal customer and pay them every month make sure that i leave the money my account ..... but no !!!! Now they have pused me seeing that they have not listend they will reverse all debit orders and make a note on the sytem that this will not affect my ITC ?!!!!!! I want this fixed asap and they will debit from FNB .... and they will get a call from me tommrow morning as they will fix this asap