2013 TOYOTA 4RUNNER Structurebody Problems

Rust appeared on the hatch of my 4Runner approximately 2 years after I purchased it new. My complaints to 2 different dealerships were ignored and left undocumented. I was told this wasn't covered under warranty. In 2019, the rust was finally documented by Toyota and I was told that this would have been covered under warranty, but now it's too late. At that point the rust was just an eyesore. Sometime in August 2021, while driving on a bumpy dirt road, my "open door" indicator illuminated and a warning chime went off. When I checked my doors, I discovered that the hatch wasn't fully secure. Upon closer inspection, I discovered that rust had eaten away the metal that secures the latch which keeps the hatch closed. The rust I had on the hatch, had eaten away at the metal from the inside, out. There is now only a small piece...