Loud music / parties is increasingly becoming a nuisance for DHA residents but DHA or SECURITY & VIGILANCE seems helpless, why?

Playing of loud music / late night parties is equally a concern for DHA, as is for residents. S&V responds to the complaint but usually the volume is reduced on he avoids of S&V but it all gets resumed as and when our staff depart the scene. Police is involved but owing to the nature, police also does not take any hard steps, which sometime encourage people to continue.