Poor service from Manager at PnP Hyper Ottery!

I am very dissapointed in the service i received from the Manager, Waleed at PnP Hyper Ottery for his incompetence. I bought a Bambino car seat on the 8th October as it was on sale for R929, however when i got home i realised that seat in the box was not the correct size (age 4 to 12) and i wanted the one on display which is for age 0 till 3 years. The car seats in sale for both ages was displayed in the stores aisle at R929 as well as in the baby aisle and the seat that i needed was not in boxes and the price noted was R929. I even spoke to 2 other ladies in the store, they checked the boxes and noted that this was the price and need to speak to the Manager for stock however the manager advised that there are no stock in boxes and oy rhe ones on display is the last they have and then told me that the correct price is R1400 for the seat i wanted???

I then told him that its displayed in the aisle and in the baby section fir R929 and i already purchased it under the impression that it was the seat for ages 0-3 yrs..he then said sorry they will rectify the prices and there's nothing he can do. They then refunded me my money.

Im upset because this manager, tried to spin some story instead of apologizing and just dismissed us because he didnt want to deal with us.

They supposed to honor the price that they've advertised it for.