How are you all contacting your service centers? I call the number listed for the local (Decatur) one, and I get what seems like a messaging service. They can look up my appointment and add notes, but when I asked for specifics about part availability, I get a vague “they usually order parts in advance and it takes a few days.”
I have an appointment on Monday and still have not discussed the issue with a person. I really don’t want to show up and be told that a reschedule will be necessary, but that seems the most likely outcome. In that scenario, I hope they just be convinced to loan me a car and hold on to mine until it is done (there are a few other manufacturing defects, including cracked rear glass.)