Poor customer service and the price you see is the price you pay

I am disapointed with the bad attitude of the sales ladies at Rage store at Westage Mall, Roodepoort near the food court. I was behind a lady that was trying to buy shoes and the 3 ladies that work there were trying to convince her to buy the shoes with a different price than the one on the shoe. Their reason was that they forgot to change the price as it was no longer on sale. She saw a specific price on the item and as i was waiting behind her to pay for my shoes, i felt the need to intervene as i felt it was not the customers fault , one of the sales ladies turned to me and said i should mind my business as they were not talking to me. Those ladies need training and talk on how to treat customers.