Bought a 2024 CPO Ioniq5 - Was supposed to get 1-year of Bluelink and dealership is ghosting me

Everywhere I've read 2024 Certified Pre-Owned (CPO) Ionic5's get 1-year free of Bluelink.

The dealer created my account before I left and when I got home I saw that the subscription said 3-months free. I called Hyundai Bluelink support and they said I needed to reach out to the dealership to "put in the correct code".

I've reached out to the dealership multiple times to talk to the sales folks. First they said they'd call me back but they never did.

Second time I called they said "3-months is all you get". I push backed and said that's incorrect and not what Hyundai says or what I was told when I bought the car. They said the sales manager would call me back but they never did.

What do I do here? This is Hyundai of San Leandro is the SF Bay Area