Let's all be respected equally when we exercise our legal rights in all retail stores s. Pick'n pay must not discriminate when we shop in their township stores

My experience yesterday wasn't pleasant at all I went to buy a pack of cigarettes at their liquor store. The pack had a price tag of R36.49 and after she scanned it, it said R42,95 so I said I cant pay that price. The cashier had an attitude towards me and called a supervisor or was it a manager m not sure he didn't even have a name tag. So he also gave me attitude and told me he won't give me a pack for that price, he left called another lady which also didn't have a name tag she told me the same thing they won't help me. I called pick n pay customer care, the person I spoke to said their policy doesn't allow them to sell at the price I saw it's their policy. I asked her to get me a team leader I spoke to him he took my details and said I'll be contacted otherwise he also can't do much about it but to escalate the matter as we were speaking he hanged up on me. My problem in this matter is I worked for retail companies and I know the law so I believe what happened was race issue I strongly believe that in our black communities we are not taken serious as in the white community I experienced a lot of that ever since I worked and also as a customer in that industry. So people let's not be treated otherwise because we taken as if we have no rights or we think we better when we exercise our legal rights, more especially in our black communities.