customer pricing advert incorrect

<p>i saw on the website promo on bakers biscutis buy 3 pay for 2, i walk in to the gallor manor branch bought 9 promotional packs but up on payment the promo is buy 3 and get the cheapest one free. then the promo is not correctly advestised as its different when you get to the shop as when i quired the promo its not benefiting the customer as advertised</p>