Subaru has no power at all , key won’t unlock car

I drove my car in the morning, everything was fine except
the steering was a little stiff but that cleared up as i kept
pulling out of the drive way. I came come parked and
about 4 hours later went to get back in my car but my
remote wouldn’t open the door and neither would the key.
I called tow place and they couldn’t get my car started
after breaking in. They tested the battery and said it was
good, so was the main fuse. He finally tired to unplug all
power and plug it back in but no luck. Car has no power
at all. New car, bought it from dealership about a week
ago.