Sounds like not much has changed since 2015. A good friend ordered a new Model S in 2015. It arrived with a "squeak" that turned out to be due to missing welds in structural components of the chassis. They wanted him to sign an NDA to get a replacement vehicle (which he refused to do, both on principle, and because he'd talked to friends about it already). So he was forced to keep his vehicle, which was then repaired…
$15k for a refurbished battery from another old broken car. Once fixed, the cars resell value is at about $20k.
And they took my battery back to sell to someone else for $15k.
Definitely feel like a HUGE sucker for supporting them. This thing was $101k new.