Shocking service From Vodacom

<p>I ported from Vodacom to MTN in July this year. Despite the port being authorized by Vodacom, I am still being billed on a monthly basis. I have queried this many times with Vodacom (since August) and been shunted from customer services to billing and eventually ended up at the cancellation dept. I've spoken to call center operators and their team leaders at both the Jhb and Midrand call centers, have received reference numbers, been promised that the matter would be resolved and my money refunded, but none of that has happened. They also promise to provide feedback but that has never happened. In addition, they have threatened to blacklist me if I stop paying for a service that I haven't used for more than 2 months! </p>