Clearly, the initial bill was a local service station decision and not corporate policy. It was rectified with a new car, even though missing bolts, as horrifying as it is, is not indicative of problems with any other component.
"Not known for build quality" is mostly based on anti-Tesla hype. JD Power found that the average premium vehicle has 204 issues per hundred vehicles, while Tesla has 226. Yes, it's bigger, but per vehicle it's two problems vs 2 1/4, meaning two for most people. And Tesla will come to your home to fix it, so the typical Tesla owner will spend less time getting a vehicle serviced.
Many of the reported problems were because Tesla was in a rush to send out cars near the end of the quarter that any other company would have sent for rework. They were of the same quality as what other manufacturers made, but it was a question of whether a minor repair was made before or after sending the car to a customer. Tesla's business model was obviously flawed since it bumped up the count of reported problems, rather than bumping up the rework rate, the latter of which consumers don't see. And it was a clear image problem.
With their new policy of not having EOQ rushes, they should be able to avoid this issue completely. As for the steering wheel, even if it's a one in a million occurrence, that doesn't excuse it. Tesla will have to add an extra step to their QA to address it.