********** contracts and failure to respond or resolve a refund query

I have logged an issue where in i was upgraded by a third party who misrepresented themselves as from Vodacom. I received totally different product than what was sold, Vodacom managed to assist in cancelling ONLY one of the contracts that i was entered into. Despite several calls to cancel the remaining and refund me, i am yet to be called and my bill is pilling up each day. I have called more than 3 times with no success nor resolution to my query and complaint. Vodacom is recently becoming worse than both Eskom and the ANC government combined, in that they allow or partner with ******** and they pocket my money in the process, while my queries and complaints are not being attended to , yet my account gets debited each month.