My property was damaged

While cutting down trees in our neighbour's yard, they dumped all of the trees over our wall and broke our wash lines completely - I can no longer use them, as I no longer have wash lines thanks to them. Then they dumped all the trees right in front of my driveway gate. When I asked them to move it so we can get the car out, they ignore me. The company does not answer the phone and I had to get the police here to get them to move it. I want to know when my wash lines that they broke are going to be replaced???