You can take your car to a fellow pw member to get it fixed, dynamicallystatic lives in pindi so you can contact him. Or you can get the things yourself and fix it at home. The easiest available choices are meguiars ultimate compound and meguiars ultimate polish. But these cost a couple of k's so if you plan on just getting this door fixed an don't intend on using the products in the future, better get the door fixed by a detailing pro like the member I've mentioned above. Or if you visit islamabad, i'll do it.
Post the image on the car care thread, see what everyone says.