Welcome to the forum

Wow! If the the dealer wont take care of it, then either ask for the dealership owner or the General Manager. If you can't find satisfaction there, then write Toyota Corporate office.
When I bought my Spyder, the dealer was suppose to pay sales tax. That was the deal. You have 30 days here to pay the tax and get your license plates. At 28 days, I still hadn't recieved a check for the tax from the dealer. And after several phone calls and finally an ugly arguement with the salesman, I emailed The Toyota Corp. office and they got me immediate action. I got the check, a digital camera and a leather briefcase too-along with an apology.
Best of luck