Stinking attitude of cashiers

I went there,tried to buy slush and the lady stared in my eyes and told me that it was not available while it was right there staring at me..I asked her how is it not available while I’m looking at it. She told me that they aren’t supposed to sell it. It’s not the first time they refused to sell to me,last week I wanted to buy a bottle of water and I was told to go to Fishaways.