Poor Cancellation Service

I have been trying for two months to cancel my contract with Vodacom. I received the early termination quote, tried to do an eft but was told the reference was incorrect. I emailed for assistance, still nothing received and no updated quote. I am no longer using the number, I have immigrated and will be closing my bank account at the end of the month. You will not be able to deduct any debit orders. Can someone please assist or write off my account. You can reach me via email.