Mid/rear Seats Assembly problems of the 2015 Dodge Durango

I was driving home from work on a city street just exiting a roundabout going no more than 15 miles per hour and my headrest exploded forward hitting me in the back of the head. It was quite jarring. It felt like something heavy as in my back seat and shot forward hitting my drivers seat. There were no cars around me, and nothing hit my car.

I have a brand new Dodge Durango that is only a couple months old. I do not even use my back seats to sit in so I know this was not caused from wear. On the passengers side back seat you can see the foam hanging out of the seat, the seat cover does not attach to the seat it is an open area. I took my Durango to the local Dodge dealership and they said they would fix since my Durango is under warranty. They ordered me a new seat cover and they new one was worse than the first one that was on the car, they then told me this is a design flaw and they could not help me, they offered to cut out some of the foam so it would not hang out of my seat, but you can still see the inside of the seat. I am extremely upset, I paid $40,000 for this automobile and have to live with seeing the inside of my seat foam hanging out of my backseat. It is located on the inner part near wear the seatbelt buckle connects. I need help, I feel like I have been taken advantage of.