Misleading adverti*****t and rude regional manager

I wanted to buy tiles from build it was advertised R124 and R299 with the same stock code and discription I did went to pay but was told by the teller that it's R299, I did speak to the manager of cash build tsakane I told him that they are misleading the public after few min the manager gave me the phone with regional manager with the name Andre Phillip we spoke and told me that they do have a lot of people that buy for millions of Rands and I'm the only one complaining and I can withdraw from the transaction and I must not buy from them any more