OVERPRICED 20GIG BUNDLE AND NO ANSWER

I spent over an hour on the call centre waiting to cancel my overpriced contract which basically amounts to ****************. As my contract fell out of bundle vodacom graciously decided to increase my 20 GIG data bundle to a whopping close to R800 a month deal, almost the same price as a 100 gig contract!!!! . This is truly disgusting and in addition there is no way for a customer to email them and cancel this 5 X overpriced contract NO, you must wait online and NOT get an answer or call back! Please can someone urgently call me and cancel and refund my payments over the last few months, there is truly a limit to over pricing and this will be referred to the commission.