My boundary wall has been damaged by a tree/shrubs from my neighbour's side of the property. We have spoken to them several times over the past few years to address the trees as it was causing the wall to lean over. A new tree has grown against our wall and with the recent heavy rains has grown rapidly and completely broken through several panels on the wall. We spoke to them a few times when the tree was still small but was just ignored. I sent a message to the neighbour when I noticed the was was not broken and as usual he said he will look at it but never got back to me. I have tried the friendly neighbourly approach several times which is obviously not working. As much as I am reluctant to go this route I need to protect my property from damage and maintain its value. What steps do I need to follow next to get them to sort out the root cause of the pressure on the wall and to get my wall fixed? What type of lawyer deals with these issues?