Municipal Corporation Of Delhi — backflow of sewer water in house

Address: A-180, New Delhi, Delhi, 110062

Hello, i want to draw your kind attention towards the inconvenience caused by the blockage in sewer. Generally the matter of the sewer used to flow in the street, but situation became worser when the water of the sewer started to backflow in our so kindly consider the situation and please take some action as soon as possible, i would be grateful to you. Thanking you.