Unfair treatment and poor customer service

The supervisor that was on duty apparently `working ALONE` on the floor yesterday (Sunday 25/08/2019 around 13:00) at Spar springbok, the attitude she gave me while asking for change, she made me wish i was White coz if so im sure she would have gladly assisted me but instead, with an attitude, she just said 'im working alone and im busy'. As she walked away, while i was standing there appalled at the info desk. She didn't even want to hear how much change I wanted, a second after she uttered those words to me, there she was greeting and having conversations with white customers. It would have been better had she first heard how much change I wanted and if she handled me with the better customer service etiquette. Also, it's not like I was a random customer because I was in my work uniform which means it was work change not personal. I was very disappointed ???? Talking about Spar being "good for you". I had to leave the store, and go elsewhere as I was also on duty.