Very unfortunate story, OP. I havent seen this with Tesla (only been on these boards since I decided to buy a model 3 in november 2018). I have seen this happen with BMW. By "this" I mean basically brand new cars with some problem that has to be taken to the dealer / service department for.
I even had a situation where I had a brand new 2016 X5 (leased in 2016) that had electrical issues that showed up with less than 300 miles on it, that they could never fix properly. BMW ended up taking it back from me and giving me another vehicle after 4 times of trying to fix it.
OP, I would suggest that when you get it back, give the car a good once over, and most importantly, if you have ANY issue with the car you are not sure about, take it in. From your Sig you have a model S so you are familiar with Teslas in general. If you have anything you think is strange with the car, take it in (and get it documented).
Dont sit on anything. I would also be "politely disappointed" when you go to the service center to pick it up. Dont be a jerk, just say stuff like "Man I love tesla, this is my second one... kinda took away the excitement to have to bring a new car in for service so soon. I hope we dont get to know each other on a first name basis" (lol).
What you want, is the service center in your corner if something else happens, with the individuals you are working with wanting to make it right, because they like you. This is general advice and works with any human interaction, really. My BMW buyback went very easy.... because I had the service manager from the dealership on my side trying to make it right.. and had sort of prepped them as I kept having to bring the car in for the electrical problems.
Anyway, good luck, let us know it comes out. Its a wonderful car, I love mine and cant wait to get into it to drive it, even to work. My wife has a brand new X3, and I have been trying to split driving both to work (she is not working) to split the miles, but even though its a fantastic car, with all the options BMW offers on it, with 360 HP, etc.. when I get to the garage and look at both of them I get in the Model 3. I have to force myself to drive her car... this from a person who has driven only BMWs for the past 14 years. I cant think of much more praise than that from me for a car, actually.