I understand your frustration and wish you the best with whatever you decide. As for the Mach-E, it may be a very nice car, but just like I would have never bought the original 2008 Tesla Roadster, I would never buy the first EV that Ford attempts to build. Look at the problems Jaguar and Audi owners are having with their current EVs. If you think dealing with Tesla’s order process is difficult, try owning one of those vehicles and dealing with service issues on a regular basis.
Regarding your $100, if you don’t have a sales adviser you can just call the main number at Tesla, ask for sales, and let them know you need to cancel due to their inability to deliver by year end. I would wait until at least January 2 to do this as right now I know it’s difficult to get through to anyone at Tesla. Once January rolls around they will have plenty of time to answer their phones again.