Screw up that is good!

The woodcutters arrived.
I'm watching the barbarism since three years that they make to the trees of the city, they mutilate the poor trees so seriously that they can't get over for 3-4 years. They call it "keeping them well", and they pruning the trees. It wouldn't be bad if they pruning them, but it looks that the only question was on the entrance examination that "Can you turn on a chainsaw?" But it was the only question, they have never taken care of any plants, that's sure. It's useless to talk of sense to nice, they don't have it. Or they hate their job, and do it like this. Could anyone explain that where's the logic in that they cut the trees by 30-40cms from the trunk? Yes, really, and it's good for the tree, it will be healthy because of it! (and will look nice, too, hah?)
Well, they arrived today, and started to cut the pines (grown in peace since 18years) in the front of our house. Then they chafed when my father asked them to "go away, but fast!" They told that they cut down the lower boughs, because they cover the streetlights. -"Then you should cut the trees, buddy, because the upper boughs cover it!" Then the good man wanted to make us frightened that "he will inform against us well". Yes, a simple woodcutter is an official person, too, right? Anybody could come, but we won't leave the trees that the first residents have planted.
At the end they went away, forever, I hope.