GHMC — Trees cutting & Pruning

I live in Vivekananda Nagar Colony, Kukatpally, Hyderabad, we have 2 trees at the same point at the corner of our house, I had requested the the local GHMC office in Vivekananda Nagar Colony, library in the society office, to get 1 tree cut as it has become very old & the huge branches keep falling down. I had given letters several times in this office but no response. We built our house 10 years back & we have 4 trees(including the 2 in one point) adjacent to our building out of which 2 tress are very old and branches keep falling down which is very dangerous for the people, the branches are never pruned or the tree mentioned above is not cut as there are no electricity poles near these trees. For us the building walls get completely bad, during rainy season its worst, all types of insects crawl in as there is no Sun falling through these.

Please let me know if someone can help