1. unfortunately this syndicate raj is the feature of this new dispensation in Bengal for which precious little is done by the law maker here.
2. however fortunately courts are here which can always be brought to play the role of a savour.
3. SO first lodge complaint agaisnt these persons mentioning their names in the complaint and if the FIR is not registered then go to Magistrate's court.
4. If even after the Magistrate's order the police does nothing then you can approach the high court which is aware of these types of rampant nuisances nowadays.