Zero service from Vodacom to upgrade contract

I am trying to upgrade my package now for a month, but I am not winning. I app**** online, a consultant had to phone me. I spoke for about 30min with a consultant, because I was not approved for a deal I wanted, but I was approved for a more expensive deal. After a long debate, I finally received approval for the deal I wanted. I have not received any feedback on this order. I have phoned 3 times, and they keep informing me the consultant canceled my order, I need to speak to this consultant, but they drop the line or say the consultant will phone me back, and she never does. I am fed up with this. What does a person have to do to upgrade a contract? I am at the point of cancelling all my contracts with Vodacom and moving to another company. This ios beyond ridiculous!