Borrow another phone from a friend to call a family member

who typically uses the Tesla app to access the vehicle if you've lost

 both the Tesla key cards and your phone.

Using the Tesla app, the other person can remotely unlock the car.

After that, you can return home and lock your car in a secure garage until you obtain new cards.

Make sure to ask for the 4-digit deactivation code for the stolen Tesla key cards.

 Depending on the car model, a replacement key card for a Tesla costs around $35.