In an ideal world, i.e. if you can get the door open, there are 4 screws across the bottom rhs, under the door pocket. the rest of the bottom and the 2 sides are held on with heavy duty press in fasteners, and you have to just pull hard but carefully from the bottom to get them all to unpop. when that is done, angle the door cover to about 45 degrees, then pull the top up and it should come out of its clips.
as dann says, if you can't get the door open, you're going to have to pull the clips out from the top first. don't lever against the glass, the pivot point is much lower down and it will just break. there are only two clips on the top, and they are at about 25 % and 75 % of the way along, so concentrate your pulling force at these points.
If you need to fashion a puller to get behind the trim, go somewhere like B&Q and by some fixing brackets, which are steel plates. then using pliers, you can bend on end over to form a hook which you can manipulate behind the door trim and apply force to using a pair of mole grips or similar.
sadly, some damage is inevitable.
good luck