Boss, same happened with my mehran. yeh ko kuch bhe nahe my car roof has a pointed dip of approx 3 mm becuase some dashhole throw stone from 4rth floor.
just get it kalam touch so that rust will not spread, baqee rehne do.....ignore.
isnurance waley karengey nahee aur agar kerdengey to lambey chakker, phir poori roof repaint.