Delhi Development Authority [DDA] — DDA Water Bill Online View and Payment

My DDA flat No 3343 in Sector A Pocket B, Vasant Kunj was registered by previous tenant for Online Water Bill Payments using Consumer ID DDASZ1A00BC3343. He has registered using his e-mail ID and mobile, aadhaar No etc. Flat has been vacated by him and I don't find any provision to change registered data for Consumer ID DDASZ1A00BC3343.
I as owner of the flat want to register above Consumer ID with my data given below :-
e-mail [protected]@rediffmail.com
mobile No [protected]
aadhaar No[protected]
Please help so that I can use online water bill view and payment service of DDA. Thanks.
Sureshwar Kumar