Change in Vodacom terms and conditions change your contract date

Vodacom consultant phoned me in January to tell me sms messages do not form part of Vodacom deals any more they need to change the contract. I asked if I would still be able to upgrade and consultant and manager assured me I could, it was just a Vodacom terms and conditions change. I cannot upgrade on any of my numbers, it now shows it was upgraded, despite this being a required change of Vodacom. Calls are recorded but no one is willing to assist. They did this previously as well and do not answer email queries. They trick people into extended contracts without them being able to upgrade, it is just a change in their T&C. NB I WORK IN A MEDICAL FIELD CANNOT ANSWER MY PHONE DURING THE DAY - EMAIL ME