Delhi Development Authority [DDA] — Illegal occupant of DDA property

Sir,
house no. of 106 of pocket 1 of sector 25 has been illegally occupied by some persons as it it was vacant. The persons who have occupied this property are suspicious and creating problems for others. They use to prepare food by burning wood and leaves and it create smoke for others. This smokes spread so many homes and difficult to reside here.
we the residents of this pocket asked them various times to not do so but they did not stop to do so.
i came to know that your j.E is collecting the rent and has allowed to do so.
please do needful immediately.