Could not buy a contract as advertised.

This morning on Cell C website I was checking out their new Epic contracts, and saw the Samsung galaxy S6 edge 64 GB on Epic 150 top up for R150 per month. I immediately requested the get it function to make sure I will be contacted for this promotion so that I could purchase it. I received a bot email, that said I must contact Cell C direct for more assistance. I did and the person I spoke to told me I can only get an Epic contract from a Cell C store. Then I went to the Oudtshoorn branch of Cell C, one of the personnel checked the price of the website and it has been changed to R749 on Epic 150 top up. I am not happy with the false advertising about the price on the website. That is bad business. Is there any way I could get the original price I saw on there website?