Delhi Jal Board — Overflowing common kitchen drain leading to stagnant water pool

Address:

Nehru Apartments, Gate #4, Kalkaji. New Delhi-19

Drain belongs to the flats #157 (Aloke), #159 (Reghu) and #161 (Nim).

Their kitchen drain is overflowing and creating a stagnant pool of dirty water which is a potential for breeding mosquitos.
Have already raised a complaint with the the Health Department--they said they would send a team to deploy anti-mosquito spray. No one has turned up as yet