Ok, just an update.
I found the tracking mechanism was still inside the guide rail, but at the very bottom, So i didnt even realise on first inspection.
When i found it, i placed the 2 window guides back on (those 2 circle things i posted earlier), and it worked fine again and my window stopped sliding around!!!
BUT then today, the bloody window went nuts. I wound the window all the way down and back up to see if it was a 1-time thing... to notice my bloody tinting was scratched off!!!! I was NOT happy
Got home, took the door card apart and found out the guides had fallen off and the screw that held them in was scraping against the window (which caused the tint to rip off!!!)
I then realised i put the guides on wrong. The one with the thread should have gone on the side of the window closest to the outer panel of the car, not the one closest to the inside cabin of the car.
Now i need a new tint