2013 Toyota FJ Cruiser Suspension Problems

I went down the road & hit a bump my car rocked a little so I stopped to check the lug nuts & see if anything was wrong. I did not see anything. So, I continued to go pick my friend up as I was driving down the freeway anytime I hit a bump the car rocked more the faster I went. So I slowed down & watched traffic around me. Picked my friend up, went on the ramp and hit another bump and bam, my vehicle went so high up in the air my friend thought we were going to roll over. I immediately got off the freeway & there was a dealership right there. I asked if they could look at it & they wouldn't, they were too busy. I managed to baby it all the way back to my dealership. They said the control bar came away from the frame that was rotted. I called my insurance co. they said nothing they could do because of wear & tear. They did not view anything but pictures. I called claims & they said my VIN has no recalls that they won't do anything. They did not look at anything. I asked that they call my dealership to have them tell them how serious this could have been. They said my warranty was up in July of 2021. I had no letters to tell me this. I have only had it serviced at the dealership when it was due for service, nowhere else. I found out claims previously have been paid through a lawsuit on frames. Frames should last longer than this even in inclement weather. I also had it fluid filmed. Nobody will do anything & it's scary. Sad they want an accident before they look at things. I hope you can address this some way. Thank You.

Frame rust. Gas tank strap rust. Undercarriage rusted.

SEVERE RUST UNDER CARRIAGE INCLUDING FUEL TANK STRAPS AND SUSPENSION COMPONENTS. NUMBER IS RUSTED AND SKID PLATES. RUST BASICALLY COVERING UNDER VEHICLE. CONCERNED ABOUT INTEGRITY DURING A CRASH