2011 Land Rover Range Rover Sport body & structure problems

I was driving on the highway at 65 miles per hour and all of a sudden the rear roof spoiler flew off and hit the car behind me. After doing some research I found this problem to be common. I was surprised to see that there was no recal for it as it is a very serious hazard to all drivers near when it happens. If the weather was bad it could have caused a deadly accident.

I have an id number 10984367 but believe the documents were not uploaded. These are important documents recognizing hilton head land rover was aware of other rear spoiler detachments other than mine. Please note service manager denied ever having heard or seen of this but service advisor bob robertson said he had just seen it a few months before. I have enclosed the document stating adhesive failure. This is extremely dangerous.