Delhi Jal Board — Sewage blockage in Om Vihar phase 2 uttam nagar west

We have been complaining for sewer blockage for past 1 month-
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I am resident of 117 omvihar phase 2 uttam nagar west and here sewer is blocked for the whole block it smells bad, had mosquitoes and flies piling up and during rainy days it's a pool of dirt. We are concerned for our health and well being. We tried to reach DJB Je Chetan Gupta- never picks up phone and they resolve the problem just by sitting in their office. I have received message twice that our problem is resolved when it's the same situation outside my home. No one from DJB is ready to solve the problem!