Rude cashier

OK Foods Silkaatzkop in Secunda. This morning they opened 3mins late, Linah the cashier gave me attitude when I ask why they open late. She said bcs they short of staff. And I said You cannot tell me that its not our fault nor problem that the store is under staff, she then started to tell me were to get of. And carry on she ddnt wanna listen to me as she calls the shorts and shes in charge she evn went as far as shes doing me a favour by helping me pay. Otherwise she will proceed with her floor cleaning.