I've always raved about my Service Center. Before the Model X deliveries, they still did valet service, even if it wasn't officially supported. They were responsive and proactive. The service exceeded my experience at Lexus and Acura service centers in the years prior. In the last 6 months or so, everything has changed. I email for an appointment and nobody responds. Weeks later, I follow up and they put me at the back of the queue. Communication is near zero. My X has been in service for 16 days, as of today, and there's no ETA on when it'll be home. A good number of those days it was sitting in the parking lot with the liftgate open. The battery ran down (I'm assuming because of the liftgate being open) and I had to contact them to get them to charge it.
I don't really blame them. I think it's a resource problem. These are the same people who provided excellent service under reasonable load. They're just buried. Something definitely needs to be done because if I bought my S today and wound up in this service environment, I'd be terribly disappointed. New customers are getting a terrible look at what Tesla service could, should, and used to be.