incorrect price displayed

I went to Pick n Pay in Kempton Park to buy kimbies for my son as I saw they were advertised as R129.60 for the huggies gold, I then decided to buy two packs. when I got to the teller they said the price is R169.00 for a pack I then told them that it is advertsed as R129.60 fro the huggies gold in the isle it is packed, I also took the teller with me to see. she then called her manager and the manager said that they can not give it to me at that price as it shows R169.00 on the system, I aksed her why is it then advertodes as R129.60 on the shelf and that is the price it should be. I the customer was misled by the price it was displayed on by the shelves. I am very disappointed in that. should I not get the goods at the price it is advertoised for. Disgrantled customer.