2018 Dodge Durango brakes problems

I was driving on I75 North in Florida near Ocala (exit 358) traveling about 70mph when I approached slowing traffic. I attempted a slow and steady stop without slamming on the brakes. The emergency braking system engaged but the vehicle failed to stop and I was not able to completely floor the brakes. In an effort to avoid hitting the vehicle in front of me and causing a multiple car collision I swerved onto the grassy side of the road.

I went through cheetah car wash with my 2018 dodge durango and upon exiting the car wash and receiving green signal to drive I shifted from "n" to "d" and started slowly driving toward the vacuum cleaning area. As I was slowly pulling into the parking lot, the vehicle suddenly accelerated and hit the post and building, causing it to stop. I called the police to the scene and they had the vehicle towed to basham towing service in bowling green, ky.