Very bad customer service

I recently phone absa 6 times to change my debit order details with them as well as countless emails and the they did not even bother to assist me or phone me back. I then stopped checking up thinking everything was changed like i asked but to my suprise found out it wasnt now i have to pay cozts that are involved for debiting the wrong account and still no one is replying to my emails and everytime i get through to an operater they put the phone down half way when i start explaining whats happend.