Tesla service installed 4 new tires on Model S but a few days later I noticed a vibration at high speeds so asked them to check balance. They sent an invoice for $742 for approval, included $275x2 for alignment check, $212 for suspension noise!! I cannot get them to explain the charges and cannot make an appt without approving the invoice. What happened with these guys used to be pretty good but things have gone down hill. Any suggestions? I think the will trump up some charges and bill me for few hundred dollars.