without Permission

Several years ago a neighbour asked for permission to cut the branches from our backyard tree that has branches into his yard.  We agreed that he could trim the branches on his property.  When we returned home from work we found that he had come onto our property (without consent) and had chopped off the branches at the trunk of the tree.  We called the Town and we told that we could involve the Police and that the Town had no Bylaw about trees.  We have many lovely older trees in Newmarket and we need to protect them.