Dealer wants to unwind a new car sale

So I bought a new car from a dealer, and when I got it home, I realized it was missing about $2000 worth of dealer added accessories. Now it's mostly crap. Window tint. Some kind of plastic edge protector kit, etc etc. Still I kind of feel like they should install it since it's on the window sticker. Got in touch with them and they admitted it was a mistake, but every time I tried to schedule an appointment to get it fixed, they'd just ghost me and stop replying. Finally got sick of it and called the manufacturer, filed a BBB complaint, wrote up what happened on Google reviews, filed a state complaint, etc.

They got super pissed off. Sales manager called me telling at me, saying they didn't owe me anything. General manager emailed me and said the same thing and demanded I remove reviews. I sent him a photo of the window sticker, discussions with the same guy about what was included, emails from two different employees saying they owed me. That shut him up, but now he wants to unwind the deal he says. Full refund and return the car. I've had it a month and put 1200 miles on it. I really doubt he's sincerely going to do this. Any thoughts on why he's saying this? Does he just want me in the dealership so he can intimidate and threaten me?