Rear Suspension Shock Absorber problems of the 2012 Jeep Grand Cherokee

My car makes a terrible noise on suspension, first started on the back of the car, I`ve send it to a local Jeep dealer to repair it on warranty and after 4 visits they change my shock absorbers (rear), right after that, the noise disappeared for a couple of days and return again, I went again to the dealer, they refused to change it again and set up a meeting with Jeep local warranty manager in pr, their representative drove the car along with me, heard the noise and said, there was nothing they could do, because this was a problem with all Jeep cars from that year (2012) and there was no way to fix it (it might have a recall someday) but I should keep it that way since there were no risk. Then he authorized (after I insist) to change it again the shock absorbers (rear), this time the noise was gone for 2 weeks and came back again. The noise returned again louder, it seems my front and back wheels are loose and I hear a noise on the front of the car (and felt on the steering wheel like something was loose) every time I hit the brakes. On April-2014 I called again Jeep representative in pr and explained all that was happening, he then set up another service on Chrysler/Jeep dealer puerto rico and on 04/21/2014 the dealer representative took my car for repair and said they changed again the shock absorbers (rear) for the third time and also changed another piece to fix the front noise. Again for 2 weeks the rear noise disappeared and now returned louder and also on the front of the car makes a snap noise every time I start the car and sometimes when I make turns (left and right). My warranty expires on 28/Feb/2015 and it seems Chrysler/Jeep is just pushing it until I hit this date and no longer be responsible for the repair. I`m afraid for my family`s security since we use this car on daily basis on freeways here in pr for our commute.