Black Friday Unlimited Voice offer

I have been a loyal Vodacom customer for several decades. After waiting months for Black Friday to upgrade my contract, on 24 November 2023 I upgraded online choosing the unlimited minutes deal for a Samsung Galaxy S23 FE, which came with14.8GB data and unlimited voice. This was 4.8GB + an additional 10GB for 2 years. The order was placed and confirmed. A few days later a consultant called to confirm the deal but only 10GB of data was recorded and not the 14.8GB per the advert. We agreed that it should be corrected and the transaction could continue. A day later I called 082 135 to find out what was happening, to be told the contract had been cancelled. I have since called every number given to me by consultants, Sales, Upgrades, Cancellations. I emailed a supervisor at centervo, who called back and admitted they were at fault and told me the would assist. Since then not even a reply email or call. l got the email of someone who I was told was a manger. Almost two a weeks later, still no reply. It is pointless calling any of the call center numbers as they have all indicated that they cannot help me. All I want is for the deal I subscribed to, that was cancelled without my permission to be honoured. It is now nearly three weeks later. How hard can this be ?