Base po sa karanasan ko, hindi talaga maayos ng casa iyan.

The best would be dapat pinanood mo how they took the door panel off para pwede mo na din gawin sa bahay.

Then try to drive the car with the door panel off and listen for the sound. Stop the vehicle, turn off the engine. Do not open the door. Instead, bang on it with the side of your fist. Then listen if the sound occurs. Try to check every screw if they are tight.

More often than not, the solution is a low-buck/ghetto one. On my Pajero, the rear seat rattle was cured by placing shop rags underneath the carpet which goes unerneath the seats. Shop rags are barely Php5/ea.

When I had door panel noise in another vehicle, I just cut some rubber off an old slipper and slipped it between some metal components that rattled whicle the vehicle was running.

Try to ascertain where the sound is coming from. Is it from inside the door itself? The door latch (the thing that holds the door close)? The door panel? Or maybe somewhere else (sometimes it's the inner door handle and lock knob). Is the noise irritating? What kind of noise is it? Sumasabay ba sa lubak or sumasabay sa engine?

Hindi mag-aaksaya ng panahon ang casa sa problemang ganyan. The most they will do is a half-baked solution.