There doesn’t appear to be any well defined escalation procedure within Tesla any more for these sorts of matters. I don’t even know if “regional managers” are a thing any more. There’s basically the service center manager and then corporate. Power and decision making is held very closely at the top.
In short, Tesla doesn’t care. You’re wasting your time trying to work the normal diplomatic chain of command. If you have an issue you want addressed, file for arbitration. It’s the only thing they respond to.
LinkedIn worked for me, which forwarded my concern to a "customer experience" team. Not sure if it did too much, but it at least got the undivided attention of the service center manager. Just be professional.
Don’t think the original comment was dissing the fart so much as Tesla customer service. Farting into the wind is something as likely to be noticed and responded to as attempting to communicate with Tesla. Nothing polite or impolite about it just ineffectual if attention or a response is your goal.
Unless your fart is on YouTube or Twitter with tons of followers, it’s just too easily missed or ignored. Slightly less noticeable than a fart in church but also less likely to directly offend.