Poor service ToysRus Richards Bay

I went to ToysRus Richards Bay to get my nephew a gift for his birthday. I took a box of lego that said the price was 249.00 on the shelf . When they scanned its said R349.00 so I showed the cashier and the manager the price on the shelf. They said it was a mistake and pulled the price off the shelf I then asked if they would give it to me for the price it was advertised for and they refused. I asked where the item is that was the price listed on the shelf and they couldn't find it. So I ended up having taking the more expensive one.