Carrier/rack problems of the 2007 Chrysler Town & Country

The 2007 town and country I helped my disabled sister buy has defective door and rear lift gate issues. We were parked and shopping and I was a passenger in her car when her home health aide hit the button to open the rear hatch for me to something out of the back. The hatch lifted then let go and slammed shut shaking the entire vehicle before I could leave the vehicle. I barely got out of the way that same day when it did again. Come to find out it had happened before and my other sister was injured when the door hit her head. The same day her aide opened the left side door for me and as I extended my leg out the door it suddenly slammed shut, thankfully I was able to move fast enough to move my leg back into the vehicle before it closed. The driver side rear door does not work at all and has a chronic leak and mold in the tracks. This van is extremely unsafe!!!! I afraid my sister who does not move fast will be injured. Please help.

While driving down the highway, we heard a very loud explosion sound. It was so loud, that at first, we thought that there was an accident behind us. Our rear van window had a whole approximately 12"x14" on the driver's side. Each corner of the window also had large chunks of glass missing. Large cracks were running horizontally through the glass. We had no cars directly around us, did not recently drive under an overpass, and had no object inside of the van that could have caused the glass to explode. This is the second time that we have had this happen to this vehicle. The first time it occurred, the car was parked in a parking lot, and when we approached the van, we saw the glass had shattered and was outside of the van on the ground indicating that no one had broken into the van.