Automatic Transmission Control Module problems of the 2017 Subaru Crosstrek

I was operating my 2017 Subaru Crosstrek on union st in braintree MA. I stopped at a red light. The light turned green. I then depressed the gas pedal. I heard a bang and the vehicle started to roll back. The transmission had ceased to operate. I luckily was able to navigate to the curb backwards. The transmission did go into park but would not operate otherwise. I had the vehicle towed to the dealership,clay Subaru, norwood MA. They later informed me that the transmission control module had blown. That along with some other electrical wiring needed to be replaced. But they said this would not be covered by the extended warranty because it was not covered. If this had gone five minutes sooner I would have been on the crowded highway going 55 to 60 mph I find out that Subaru and the NHTSA know about the problems with the transmission but are not willing to do anything until someone is killed. I really don't want myself or my wife to be test cases. I am now informed by Subaru that it will cost me over 2000 dollars to fix this problem. Since it is electrical it could be just be the tip of the iceberg.