Not going back to any checkers ever.

My experience inside chekers was very well the lady at the till was freindly and very helpfull. At the liquor store I bought a 6 pack klippies and cola tins. The lady (Edin) at the till inside the liquor store did not even greet me she immediately said it needs a barcode. Instead of her fetching it or asking a floor assistant to fetch one she ordered me to do so. Took me 30 seconds to get a pack with a barcode. When I got back to the till she was helping 2 other poeple that was behind me in the que. I was forced to go to the back of the line. I mean really. Why was it because Im white ?