Faults advertising

I bought nappies from takealot which they marked now to 96% sale.i paid for it and everything only for them to send me a email saying that my order was canceled but there was a error on the pricing.according to the consumer protection act the price you see is the price you pay.all the other people that bought the same thing got there items but mine was cancel.thats not on.i am very upset with there ****ty policy.