What is this bad we have a letterbox and a drivewa...

What is this bad we have a letterbox and a driveway of gravel.
Driver enters the driveway at a brisk pace and literally flickers two packages in the freestanding letterbox, this does not fit completely but is resolved by slamming the lid a few times, then tear away the gravel against the window, I want to call to to make a complaint, I must first pay a euro.