Car Purchase Missing Feature Listed On Window Sticker.

GA, USA.

Bought a certified preowned car from an authorized dealership a week ago and I just realized I’m missing a feature that was listed on the window sticker (that listed everything included with the vehicle such as features/add on packages, and warranty). From the factory this add on would cost about $300.

I called the dealer and the salespersons response was that the window sticker isn’t a binding advertisement and it was mistakenly listed. I feel wronged that I didn’t get what was advertised. I’m expecting their final decision to be along the lines of “it was an accident and we don’t owe you anything,” but I think they should install the missing feature at no cost to me.

Who has the leg to stand on here?