Prices advertised vs price paid differs

OK Brakpan had a special posted in the Brakpan Herald for the 30th of July for C***** cheese on special - the adverti*****t stated all 3 kinds of cheese on special i.e Cheddar, Tussers and Gouda.On Sunday the 2nd of August I went to the shop to buy the cheese on special - the floor manager at OK shouted at me that it is only the Cheddar and Tussers on special not the Gouda. I paid the more expensive price for the Gouda as I did not have the paper adverti*****t at that stage to proof the adverti*****t also stated Gouda. I went back to the store last night (Thursday night) with the adverti*****t to proof that the paper stated all 3 kinds of Cheese is on special. I spoke to the Store Manager last night whom informed me that he can't be responsible for incorrect info stated on specials and errors and omissions. It is my understanding that if a store offers an item at a particular price, they are legally bound to honour that price (the price you see is the price you pay). I am really highly disgusted with the Stores attitude regarding advertised prices and at least honouring adverti*****ts. THIS IS NOT CUSTOMER SERVICE