They can absolutely unmatch you from an inventory VIN due to non-responsiveness. If the price changes in the meantime, oh well…
OP refuses to disclose the actual timeline of events, including the steps he took as required to take delivery, how many times he was messaged asking him to do so, etc etc - despite being asked multiple times. It’s pretty clear to me he did not engage in good faith and Tesla exercised their available terms to unmatch him from a VIN. I’m sure he can still use his $250 non-refundable order fee on another vehicle at the current price on offer.
He has no interest or intention of being honest about what actually happened, so it’s hard to take any bit of the story as credible.