Sorry to hear about your ordeal!
A very similar thing happened to me, and I am compelled to share because of the amazing service that I (luckily) have had from Apple. I bought my 15" touch bar mac the same month as you have. Suddenly out of nowhere, my mac died last week. not charging, not responding whatsoever.
I took it to an authorized apple repair store in Toronto. They looked into it and billed me 1500 dollars for a logic board replacement with tax and service charge. On top of that, I also cracked the screen for which, they had quoted me 1200 for the complete display assembly replacement + tax. Furthermore, the CMD key button completely stopped functioning and a few of the keys were highly unresponsive from time to time.
At that point, I would rather dump my computer in the trash than fix it cuz it is legit cheaper to buy a completely new one. The solution they provided at the store was to call Apple. I picked up the phone, there was a really nice gentleman on the other side who listened to my whole story. I told them I used apple for the last 15 years, didn't bother getting AppleCare cuz Apple is known for its durable products. They put me on hold for about 20 minutes and finally a senior manager reached out. He was able to get me a hall pass to fix the system. Long story short Apple is footing the bill as I am currently waiting to get the system back within a week!