Bad Customer Service

Earlier today, I went to Ackermans at Kagiso Mall, I wanted to purchase a cellphone and the one I wanted was R1699 which was a Samsung Ao3 Core.. When I went to the till, it was R2, 399. I told the lady that the display said a lower price and I demanded it at that price, she said it was a mistake and said I can even go report her but she wasn't going to give me at that price, what made me angry was her rudeness and didn't even apologize for their mistake. Her name was Malebo the store Manager. I wouldn't advise shopping at Ackermans Kagiso Mall because from Management there's lack of customer service.