Vodacom debit order

<p>In the month of June I changed my bank account and moved my vodacom debit order to my new bank account, yet they are still trying to debit from my old account which is empty. The debit order has bounced three times over last two months. I have phoned them three times and every time they say they have a technical team working on it. They have informed me that my new bank account is on the system, but can't tell me why it is not being debited from my new account. With all the debit orders bouncing I'm getting a bad credit record.</p>