Probably easiest to use the app. 'Speaking to someone' isn't really Tesla's way, they much prefer everything through app/text etc. Even dropping off a car for some work -
At SC - "scan the QR code" -
but I want to speak to someone to discuss how long I may be without a car -
To real person "Hello, I have just dropped off my car."
Ans "Scan the QR code".
"But I want to speak to someone when it might be ready"
Ans "You will get a text and it will say in the app"
Brickwall - bang head...
However, it does work OK in other situations
App service concern - "Tyre pressure warning system failure"
After a few days - App response "Resolved Remotely"
I say work OK - never quite sure if permanent fix and if it would happen next time I swapped tyres - thankfully not this time, so fingers crossed.