Delhi Jal Board — K.No. is found invalid for doing complaint on site.

Sir, my DJB Bill of 08/02/2007 having K.No.- [protected] on the name of Sh. Rajkumar S/o Sh. Bishamber Dayal having address KH-32/11, Nawada patti, Najafgarh New Delhi. Area- 17/SW-2 A-10 Connection no. 2614.
Due to sewage work going on in my street the concerned contractor/JE cut my connection and asking for bribe to continue my connection.
My K.No. is found invalid when I go to DJB portal for complaining the same.
Please resolve my issue and generate or make valid my K.No. so that I can complaint against them regarding the same.