PCMC — Coconut tree causing trouble

We live in the sector 24 in nigdi and our neighbors cocunut tree is causing trouble. The tree poses great danger to people around here. Last week the branch fell on our house parapet and cracked it. Before that the branch fell on our lamp post and broke it. We have tried telling the neighbors to maintain the tree but they fail to do so. The tree is extremely huge for such a small area. The roots are also uprooting our tiles.