Out Itgoes

I'm asking for anyone who may also be experiencing similar issues. I have a 2008 Toyota Kluger Grande. I have a constant water leakage in my car. It has been that wet inside my car that the carpet was making a slushing sound. I have had it at the Panel Beaters twice now. They struggled to find where the water was coming. I'm at the end of my tether on this..Of course it started after the three year warranty run out...I'm asking for anybody or someone you may know to comment here or email me privately. It is just not good enough that Toyota tell you they cannot help as they have no way of creating storm like conditions to see if that's how the water is coming in. A hose did not work....Is there anyone else with this issue!!!

Toyota 2008 Rear back tail door is not closing. Goes down but stays open about 20cm and then goes back up but not fully up and then down again and just stays open a good 20cm!!! No it's not the button in the glovebox and nothing is in the way..