Refuse to honour markdown price

Was in the store in Northumberland road on Saturday 25/04, and after fitting on shoes, and choosing two pairs, proceeded to the till.<br> When the purchases were captured I noticed that I was not being charged the price on the shoe (sticker on shoes itself R245=red pair), however both pairs were tilled at R469 and R489, total R958. <br> As I am trying to control my temper, I asked that they correct the price, to which the sales assistant said that the \sale/markdown"was no longer applicable.<br> She then proceeded to remove the price sticker from the shoes"