Incorrect Pricing

Good Day,<br> <br> I saw a ad on facebook this morning for the knitwear maxi dress for R159.99 however when i checked the online store i saw the price was R169.99. i queried this with customer care and they said the online price is correct, i then said this is wrongful advertising and they should give me the price i saw on facebook. The lady Alicia asked me to send a picture of the advert to the mr price email address and not long after i was contacted by Sharne who advised they would charge me the price of the ad i saw. She then advised that i should let her know what store i will be going to, when i told her she said the only store that has stock is canal walk so i asked her to check availability and told her which dress i would like to purchase. She then said the advert had a grey dress and since i want the maroon dress the discount will not apply to me. This is again wrongful advertising as when Mr Price advertises a product, it is all the same price regardless of the colour. i feel like the consultant took back the discount based on a small technicality whereas in normal instances Mr Price does not advertise all colours to show that they are the same price. Please assist?