Don't deliver on contract

I went to Telkom Express in Tyger Valley to upgrade my 3g data bundle. The lady who assisted me advised me to go for the 10+10Gig Sim only option for R199pm. It seemed like a good deal so I accepted and signed the contract. <br> As always they had system issues & I was told that somebody would phone when I can come to collect my new sim. A week later & no sim. Must add that the lady did phone a couple of times to apologies for the delay & to inform me that they are working on the issue.<br> Received an email from the lady 2 days ago (no more calls) to say that her manager informed her that they can't give me the contract, as signed, as it was a promotion which has already expired. I can however still get the deal at R299pm or 5+5Gig @ R199pm.<br> I rep**** & asked for the manager to give me a call & have received no further communication from them. <br> I see this as a breach of contract. It is not my fault that their staff is not aware of promotion dates. The fact is that they sold me something & I expect them to deliver on what they sold. I don't expect the same for more or less for the same, but just what was agreed upon in writing between client & service provider.