Neighbour tree causing nuisance

Good Evening KAANOON, As mentioned ABOVE, since past 20 years our neighbors huge mango tree grown wide and tall is causing nuisance to our property,it's blocking sunlight to our solar panel and lots of leafs and dry branches do keep on falling inside our premises. I've written a letter to our Municipal Commissioner. The concerned officer from Horticulture Department visited and interogated my neighbour, as usual our neighbour stated false and fake assurance to the officer that the tree will be removed soon. Six months passed till now. Nothing has being done by the neighbour as well as the concerned authorities too couldn't keep up their words. The officer who was supposed to serve officially a notice to our neighbour regarding the removal of tree is delaying and defaulting. So please let me know whom to approach regarding this issue. Does the "MUNICIPAL COMMISSIONER" has any rights regarding the removal of our neighbour's mango tree.The tree is also too old might fall any time, life risk and property damage too might occur. Pls guide us. Thanks, Regards.