Snobby and lazy staff

Hi, yesterday was the first time I visited the Glen mall and I am insulted and disgusted in the manner in which I was treated. I was perusing through the sales rack and found a dress that I simply adored more especially since it was marked down to R250. There were 2 of the exact same dresses that I saw in different sizes. I made my way to pay with my overzealous toddler in tow. Got to the till that's behind the cell phone section only to be told the dress is not marked down. It was 3 cashiers. A tall male, older female and another female ( she had braids) who looked younger than the other woman I said what about the sticker, she said it was a mistake and that dress shouldn't have been there. I said okay so how is it that there are more than more dress there in the sale rack (under R300.00) she said that she doesn't know, she will go check. My niece was getting quite bored waiting and proceeded to pick up deodorants that looked attractive to her. These items were behind us. The older cashier looked and my niece disgustingly. My poor niece didn't know that we both were being judged. Mind you the deodorants were put back without ZERO help from 3 people behind 1 till. The store was basically empty. If I didn't have my niece with me I would have asked to see a manager to query about the dress and the sale sticker and about it being in the sale rack however my niece was cranky.