Some people are following me & tried killing me police not filing FIR

Im a law abiding citizen and a computer engineer by profession, but for the past few years Ive been facing harassment by a few policemen who operate under-cover. They folow me everywhere I go, they incite people for violence against me while remaining in the shadows all the time, and on one occasion they even tried to kill me in a road accident. Depite my repeated requests the local police refused to register my FIR against them, since the culprits themselves are policemen. I believe this is a clear violation of my fundamental rights, as well as my human rights. I request for legal action