Poor customer service 22

I was at Mr Price Westgate mall today at the tills and the lady who was helping me went to the floor to check the price and the other till operator log off the lady was helping me and log her self in without saying anything and helped two white ladies I asked what was happening she never said anything she continued and the lady who was helping me came back and she was looking for a code in a system and the same Cecelia Lady said please help the two white ladies so I asked I'm the customer here and I was there first before them and she said they are customers as well it means they favor the color of the skin just because I'm not white they have to neglect me I was very upset of their service