If it makes you feel any better, I missed a voicemail yesterday from Tesla and I called back the Delivery number and the dude I spoke with was just as clueless... then 15 minutes after I hung up with him, a woman spoke with me that provided much more clear guidance:
1) We think your LR is going to come in June; there's a good chance that it will arrive, 2) Are you ready to receive as soon as it does?
I am sitting with a "June" delivery date in my account, and still without a VIN. Having said that, based on my conversation, I am fully anticipating receiving my LR this month...