BAD SERVICE/ NOT TREATING CUSTOMERS FAIRLY/false advertising

I just came from this shop to buy the fish oil that's advertised in pamphlet 2 deals per customer that equals to 4 bottles, while in the store its pasted I'n store 2 deals as well as on the pamphlet advertised, when you got at till the story change 2 one deal per customer, stop playing with us as customers, I was then approached by the retail manager and he couldn't give me an answer when I asked why are you advertise different, cause it's within my right as per the adverti*****t they bluntantly refused to help me and insisted I can't take the 2 deals as per the adverti*****ts that's everywer on social media, this store mitchells plain Cape town are known for falsely advertising, you are in breach of not following through on what you advertise as per the customer protection act, however customer that purchased earlier today qualified for 2 per deal what happened with treating customers fairly stop playing with our people because we are coloured n yes I'm not being racial but thats how you are treated in this store you are looked by colour cause I'm white areas you don't get treated this way or misleaded by advertise n instore different oh n this retail manager not sure what he is refused to give he's name