When I placed my order the salesperson agreed that they would accept both of my cars in trade. He even checked in with manager to verify. Now, 10 days before scheduled delivery, Tesla is saying that they won't do this. They said they changed their policy and although they noted that this was the policy when I ordered but they simply changed it. I explained that this makes a difference of >$3000 for me in sales tax (tax that I have already paid on the car the second car that I plan to trade). That is a big difference. My "inside delivery specialist" (the fourth different one that has contacted my since ordering) was not at all helpful and didn't seem bothered by the fact that they agreed to one thing and now just before delivery are not honoring that agreement. Any suggestions as to how to escalate this?