Bad treatment because I'm black

I went to Checkers musina, Sunday 13 December 2020, around 13:20,I was the bakery and there they had swapped signage for hot dog rolls and hamburger rolls so I requested for what was presented and then I showed pointed to the lady that can I have hamburger rolls as I was reading, she gave me hamburger rolls I said I wanted those one meaning hot dog rolls, and before she was assisting a white male and he said the same as I did but he was never shouted and he was given his orderr nicely to his hands, when I ask the lady how is it my problem that the signage were swapped she yelled at me and she just threw the hot rolls at at the counter for me to pick up, but the white male was treated with dignity and respect irregardless, and I weighed biscuits still she just threw them at the counter whereas I'm standing right in front of her.sje hid her name tag with the plastic apron, I'm very disappointed at checkers that you guys train your employees to treat customers differently because of of the race, I would like to hear from the store that disciplinary hearing has been taken.