Incorrectly priced on shelves

On the 08/20/2017 we visited Game Menlyn to look at there car seat prices. The one we looked at were marked R1499. So now on Friday to 13/10/2017 we went to buy the seat. Which price is still mark as R1499 on the shelf. At the till the price is now R1700. We did say but that sit not the price that appears on the shelf.

All they say is you must look at the labels saw customers switch the car seats around. Which we did becaus we need to see up until which age the chair is.

Now Game do you not check your shelf especially if you know that " customers" switch the chair around.

Also it is strange that for a whole week past and the chairs were not switch they were exactly were they were the sunday 08/10/2017. Now how is that a customer that move your stock around and do you not check your shelfs ?