2019 Subaru Outback brakes problems

I would like to report an issue with what I believe to be the braking system in the 2019 subaru outback. While driving northbound on the dallas north toll way, at a speed of approximately 65 to 70 MPH, I tapped on the brakes to slow down for the upcoming decline. When I attempted to put my foot on the accelerator, the car suddenly and abruptly stopped. It was as if the brakes "locked", I was unable to accelerate. We came to a complete stop on the tollway and were unable to accelerate the car.

Slowly pulling straight into parking spot at grocery store. Applied brake when car suddenly accelerated. I was able to control steering, but brakes would not work. Steered car into empty parking spot in front of me then turned hard right to avoid hitting parked cars in row across. Subaru hit a pick up truck that was reversing out of a diagonal parking spot. The car didn't stop upon impact, instead both right side wheels climbed up the side of truck at an angle. Air bags didn't deploy on impact.