Municipal Corporation Of Greater Hyderabad — Illegally Closed our chokage drianage connection to manhole

I am resident of macha bollarum, opposite to my house a person started construction of his house 3years back till now it is not completed, and as the main man hole is adjacent to his house illegally with help of people who work in GHMC as supervisors with help of them he had closed our connected drianage connection pipeline with cement. Since from 1 week we are facing stagnant issue in our home raised a complaint to HMWS people they visited to colony and checked the main manhole on the road and informed us that our connected hole has been closed. Please take strict a action against this supervisors to this area who is helping this person in doing all illegal activities here. I have all the CC TV footages and videos and photos taken, attached few photos here. Sai hmws supervisor for macha bollarum Krishna Nagar colony and ghmc people i have cctv footage of that person's not sure on names. Dew to this persons supported my neighbour and closed our drianage connection, we had to suffer with internal house blockage issue and when raised complaint hmws people demanded 6000 rupees to clear the blockage.