Vodacom ignoring my problem.

I requested to cancel my contract on 24/08/2015. I was send a quote and was happy to pay this amount. The contract was cancelled the next day. All data and airtime was removed.On 28/09/2015 another debit order was done on my account. I've been struggling since then to get to the bottom of this. I get transferred to different people that just transfer me again. I have requested for people to contact me back but they never do. i was even told this morning that \ he might not want to talk to you"by Vodacom. I've requested a recording of the conversation with the person who did the cancellation. i will be promised by the one person and get told by another that this is not possible. I've asked why i was not informed about this extra debit after the cancellation"