Delhi Development Authority [DDA] — sewer blockage problem

Address: D-1/28 ROHINI SECTOR-20 NEW DELHI, New Delhi, Delhi, 110086

Dear sir,
I am a resident of d-1/28, rohini sector-20, new delhi-110086 near sunday bazar road.
The main sewer line near my house gets blocked regularly
But, i feel really sad to say that no necessary action has been taken by responsible authorities.
It is very shameful for the sewage dept.
So, i would kindly request the responsible authorities to take necessary actions as early as possible. I shall be really grateful to you.
Salim
Mob no.[protected]