Unhappy with Vodacom Service once again.

I am still being debited for my vodacom that was cancelled in July. I have an email with proof of cancellation and proof of the cancellation fee being paid due to premature cancellation. I am still being debited and not getting any response from Vodacom. I have moved abroad to Thailand and cancelled my account for this reason. I have records of the money being deducted and i would like a refund to be processed, what is the point of going through the whole cancellation process if the account is not actually going to be cancelled. I have had numerous issues with Vodacom and i am ready to fly back to South Africa to give them a real piece of my mind!! I would like my emails responded to Vodacom has my email address or alternatively please call my mother Cara ********** as i have an international number and the charges will be high