Misleading Advert

So Tekkie Town placed an adverti*****t on their social networks on Friday the 07th August for a certain sneaker on Sale for R650... I woke up the following day the 8th August to purchase the same sneaker that is advertised only to find out its not on sale.. Its R900. I went to 2 of their Branches.. The Liberty Mall branch, Their manager didn't even bother to explain, he just dismissed me and walked away while I was still trying to explain what the adverti*****t was saying.. Then I went to the Scottsville branch they had the sneaker again it was not on Sale.. The manager there went out of his way trying to explain what might be a problem with the pricing... It was just a cover up story but he did way better then the othe manager... My question is Why are you misleading your customers the Advert is still up but the price at the store is totally not what you have advertised. I want that sneaker with the price that you advertised for.