Spar - Wrong pricing

There is a current special for rainbow chicken polony which I went there for and only to be told that head office made a mistake with the prices. The store manager by the name of Wessel was called but he said there is nothing he can do and I can take it further if that's what I want to do as I told him I would complain as it wasn't fair for me to get there and be told that they are sorry, I wanted to pay the price I saw on the pamphlet but apparently was told I can take it further if I wanted to, i am so disappointed, I wasn't our fault they made the error.