Disappointed Woolworths customer

Went to Woolworths Horizon View in Roodepoort about 30 minutes ago. Went in for the soup promo. It didnt scan. Thhe cashier went to the shelf, confirmed the promo.went to the supervisor at the tils and advised her. She looked at him, didnt believe him. Continued to finish her conversation with her colleague then says i need to go check. When i said he just confirmed the promo and im in a hurry she looked at me as if to say who the hell am i. And just continued without saying a word. I was stunned at her lack of professionalism to me. And her rudenes. If u check my w rewards membership i am a constant shopper. And i shop at horizon most of the time. I am extremely stunned, disappointed and saddened at her behavior.