Too bad it's a 2.5 hour drive. You could do what I've done after being harassed with phone calls after a deal gone sour.
Take a day where you have absolutely NOTHING planned. Go to Richard Cranium's Crappy Car Sales and start the process of buying the vehicle they already dicked you around on. Offer, counteroffer, repeat and rinse. Let it go all the way to the finance office (here all purchases go through that office whether financed or cash offer, your situation may differ) go through all the BS attempts of the finance guy trying to upsell you.
Once you've wasted about 3 hours or so of their time, stand up, tell the finance officer if anyone from their establishment attempts to contact you again you'll file charges of harassment with the local PD, and walk out the door.
Buddy that worked in the body shop called to tell me there was some pissed off people from the top down over it the last time I used this.