Clicks chatsworth terrible service!!

I purchased a ceramic hair straightener last year on black friday it has a 5 year warranty and it is now faulty when i went to the chatsworth clicks store in durban the lady in the appliance appartment says the price is now gone up i need to pay the difference,what bull**** is that! Pathetic service i think i need to contact tony and guy dirrectly and lay a complaint about the store making them loose clients.