Harrasment by neighbour

I live in Patna , anisabad area with my family. My neighbour is an illiterate,unemployed guy and a continuous nuisance and is threatening my family continuously . He has some unfounded grudges and keeps abusing us loudly at night by coming to our doors. We have recorded videos of the same . Nearest thana is phulwarisharif . Wanted advice regarding the same as we are really stressed and frustrated .