Openserve damage property out of spitefulness

Openserve contractors was busy at the back of my yard today putting up fibre cable. I asked them very nice not to damage the plants and trees and if a branch is in the way they should cut it neatly and clean the mess. When I came back this afternoon, they torn the branches of the trees and left a huge mess in my backyard. This is unacceptable and spiteful behavior.