DSTV decoder never delivered, after 2 months their error and now say I cannot get same contract as agreed on 27 Feb.

On the 27 Feb DSTV called me to offer me the ultra Explora decoder for R999 a month to which I agreed. I phoned almost weekly to find out why my decoder has not been delivered. A few excuses were"they will escalate it." The last 2 weeks were promised they would phone me back. Today, I called again only to eventually hear the capturer typed my cell number incorrectly, now they can't give it to me for R999 anymore and is now R1099. This is a breach of contract, as error was on their side. No attempts to try get hold of me via email, nothing. This is terrible service. Almost 2 months now they expect me to pay the penalties. I know they can give me the same deal as promised.