Won't close account and keeps taking money

After having to argue with Vodacom to not be overcharged for a contract that was coming to an end, I gave an instruction for the account to be closed and services cancelled at the end of September 2015. I was still charged for October and have also now received an invoice for November. Vodacom keeps taking the money off my account and I have sent a follow-up request by email why the original instruction was not carried out, without a response.<br> <br> I want to be rid of this account and I want my money back.