Customer service with any large corporation is always at the consumer level. I've owned many cars, have inspected them thoroughly prior to driving off the lot, and found issues very similar to everyone's observations here. I've refused delivery only once, but I've never been disappointed with the point of sale customer service, probably because I've never bought from anyone that I couldn't trust.
Since Tesla SCenters are few and far between, we're stuck with the way each local mgmt handles the service. We have fewer options, as there just aren't any alternatives. For example, I have at least 3 Toyota dealerships within 15 miles. One of them will never get my business, as I've had issues with them (a typical high-volume dealership with poor customer service). The 2nd one WAS my dealership (service, never bought from them), and when their superb service director moved to a 3rd dealership, I went with him (along with several service advisors and techs!!!). I will always go to this dealership, as the service director is consistent, trustworthy, and reasonable...and...honest. (one time, after a tech had overtorqued lug nuts, when I returned with the car, he brought the FE tech out INTO THE LOBBY to apologize to me!)
There is one Tesla service center in Fort Worth. I've been hanging out there for the past month, getting to know the staff, making them aware that I DO MY RESEARCH!! They're friendly, informative, and they always answer my questions, sometimes after having to do a little research. They KNOW they don't know everything, especially working for a mercurial company like Tesla. They know that I will challenge their knowledge, and learn along with them as Tesla evolves. I hope to maintain mutual trust, which has to come from both sides!
It remains to be seen how they'll treat me when I take delivery of the Y in 10 days or so. I'm predicting the healthy, reasonable relationship to continue...(and yes, I can hear some of you laughing, spitting out your coffee!!!!)