2012 JAGUAR XF Power Train Problems

I was driving my 2012 Jaguar XF on Highway 75 my car began to go from drive to neutral and changing gears on his own and I almost got hit by a semi-truck with the vehicle slowing down eventually I made it home with the vehicle and put it in park and never came out park again, the gear box had locked up that I was told by a local Jaguar repair shop. I could have lost my life that day with that car doing this and someone else can lose their life if this happen to them if you all don't make Jaguar fixed this problem, if it already hasn't happen to someone. I reported this problem to Jaguar today and they sound like they weren't interested in what I was telling them. They said they would open and case and they will close it. Do that make sense...