Upgrade deal

On Monday 18 May I saw a fantastic upgrade deal on the CellC website. I immediately app**** for the deal on both my contracts which are both eligible for upgrade. I called the cellc national call centre and spoke to the upgrades department. Firstly I was told that my one contract, although eligible for upgrade cannot be upgraded now because it is on the Cellc redbull mobile network and the system gives errors when they try to upgrade those. Then they denied that the deal that I app**** for existed. I insisted that I was looking at it on the internet as we spoke, they then acknowledged that the deal was advertised but it was an error, and no longer available. As we spoke I was still looking at it on the net, I took a picture and mailed it to them to prove that it was still advertised. 4 emails later and 3 days later still had no reply from Cellc and I think they hope the problem goes away silently. I also called the Woodlands branch where I took out both my contracts and had the same response: I think the consumer protection act will actually help me but would like a response from Cellc on the matter before I take it further.