yeah, this is the strangest part to me. you're saying that if it's stalled for another month you'll be making car payments in dec and not even have the car?
you sign paperwork when you take delivery of the car and you haven't signed that stuff so i don't see how the car was delivered without you being sure about it (i.e., you signed a bunch of final paperwork and faxed it, etc.).
Tesla is also not in the business of holding and storing delivered cars for people, etc.
but either way it sounds like an annoying situation that needs escalation and you've tried to escalate.