Electrical Jack problems of the 2019 Subaru Ascent

I have a 2019 Subaru Ascent. On July 2, my husband was driving on a rural road when out of nowhere the car started vibrating and rattling and his speed went from 60 mph down to 30 mph in a matter of seconds and the car started flashing information on the dash. And the car shut off. He got off the road and called aaa. It was an hour and a half before they got there. Nothing and nobody was around and he had to beg the tow truck driver to let him and our elderly dog ride to the nearest Subaru dealership which was about 50 miles away. I was already at the beach at emerald isle nc and had to go pick him up at parkway Subaru in jacksonville nc. This was on July 2,2020. Today, July 11, we still don't have my car back. I am thankful that parkway dealership loaned us a car to get back to raleigh where we live and bout our car, at southern states Subaru. Parkway has told us various things that could be the problem. For for several days they had to guess as the Subaru headquarters it was 'down'. As of now parkway still has my car and I have their loaner Subaru outback. This was a very dangerous situation and could have caused a crashed as well as left my 65 year old husband and dog stranded on the side of a very rural road. This is totally unacceptable and what I thought was a very reliable Subaru Ascent has greatly disappointed. Please help!!.