Builders Hellhouse

I bought a can of 5 lt Dulux paint on a shelf where the paints were marked R 398. 00 The paints came in a number of colours and all price tickets in that range of paints were the same price. When I got to the till I was charged R460 and I went back to inspect if I saw the prices correctly and even called the employee who had assisted me. He was in a state of panic when he realised what had happened and offered to show me cheaper paint and I refused and asked to see the manager. I was passed from one person to the next and at that time I believe the employee in question removed the price ticket that relates to the specific colour I bought. When the manager eventually came he told me the price ticket that relates to my colour is not in the shelves therefore I can't claim that I was decieved by the tags all over the shelves. A few minutes later when I went back to take pictures of the shelves I found him changing prices for all paints to R460. I demand to have my money back and an apology for the lies I was told and being treated like a fool. I was made to believe that the colour I chose could be more expensive than others where as they all cost the same.Terrible treatment