False advertising

According to the Beeld Newspaper of Friday 24 April 2015 they advertised their Freedom Day specials. They advertised Hansa Pilsener 24 x 330 ml disposable bottles @ R79.99. . Upon my visit this morning at the above store, they placed the adverti*****t on the wall and scratched the description of 24 out and changed it with pen to 12. I discussed it with the manager and he laughed at me. Making a joke of it and told me it is a misprint and is 12 bottles only. He kept laughing at me and made it off as nothing. He told me that on the adverti*****t it says that if it is misprinted the company does not take responsibility but I had the newspaper with me and asked him to show me where it is displayed on the advert. He laughed again as there was nothing. He refused to assist selling me the product at the advertised price. I felt he did not respect me as a customer at all as he made me feel as an idiot telling me I have to be realistic. I still feel it is false advertising.