Noida Authority Online — Encroachment of terrace and public area

Hi Team,
Im a resident of M block sector 25 Noida
Its really alarming and disappointing that residents of second floor are encroaching the terrace and putting a lock as if its their property with grill and stuff request to interviene and have all the grills removed as if not stopped now residence shall have no public area left. Society seems to be bribed as no action is being taken (M-20 and M-25 have created their personal area in terrace.
Hoping for some action