Disrespect by cashier from Sunshine (Roodepoort) and a female security

I regularly shop at Sunshine, but today a cashier named Mokwebo Mueletshedzi treated me disrespectfully. She flatly refused to assist me in putting my groceries in plastic bags. She informed me that her shift had ended. She called a female security guard to gang up against me. I have never seen such a high level of disrespect.