Andhra Pradesh Police — cheating the government and constitution of india

Address:

East Godavari, Andhra Pradesh, 533006

Hi,
I would like to complaint about a police officer working in arms reserve attached to superintendent of police, kakinada - east godavari district.
This police officer joined police department with bogus caste certificate and by bribing the authorities.
The police men's name is "mr. Kona narayana rao" pc-475, writer attached to superintendent of police.
This person is a corrupt police men involved in multiple crimes (Involved in crimes like 365, 323, 504, 506). We have concrete evidences to prove that his community claim is bogus.
He does extortion by taking advantage that is attached to superintendent of police's office.
We have given a statement asking them to register a cc at the sp office itself.
The police men are influenced by this person and everyone is showing a deaf ear to us.
The concerned authorities are questionable to me as per the recent supreme courts order on 6th july 2017 towards order on jobs obtained under bogus caste certificates.
A complaint has been sent to ap lokayukta, petitions fowarded to district collector, all in vain.
No action has been taken till date.
We receive threatening calls from his relations and family members.
I am totally aggreived and have no idea what to do now.
I need help.