Legal aid

respected ma'am

In the case of police harassment, victim can lodge FIR in any police station. If the complaint is not been registered then you can send it to the District Superintendent. The victim can also approach the nearest Magistrate, who can order the police to register the FIR. Also he can send the complaint to National Human Rights Commission or the state human rights commission of his state. You can also invoke writ jurisdiction of High Court under article 226 for your grievance. 

Police Complaint Authority or PCA also ensures that complaints against police officers could be made to the district level PCA.

It also inquires complaints against misconduct by police officer either suo motu or when a victim files it on his behalf. PCA exist only to look into complaints against police personnel and have no there mandate.

While filing for the complaint make sure to mention your name, address, contact details, what/when happened, photographs or any proof showing that no step was taken by the police. Keep a copy of the complaint and date stamped receipt with you as a record.

hope you find this helpful

regards

Better to file petition before the Human Right commission

file a private complaint against the offender before the concerned Jurisdictional Magistrate.
or
file a petition before the magistrate and get a direction from the court to register the FIR, then without having any other way police will register an FIR and arrest the offender.
best of luck...

the above noted all options are open for you