Harrasment from my wife & her family.

This is to inform you that I am residing at Barasat Kolkata. I marriaged nearest of my home just March 2019 & it is arrange marriage. My family have 3 members ( father, mother & myself) . Parents unemployed and aged F-74 , M-66 . I am an Engineer but over 4 months unemployed. I have one 7 months son. My parents are soft kindly. After marriage my Mother - in - law wanted to control me , my family & influenced my wife to make a noise in my family. But till now could not successful. Recently (over 10 days) my Father- in- law came to my home & taken my wife with him. In fact my parents & myself really love my wife. Now my wife threatening not to come my home & continuing marriage life with me . She showing different excuse. Actually my wife always listen her parents opinion & not to follow myself and my parents. Shortly my wife & her parents continuously harrasing my family and destroy my family peace. My family continuously try to adjust with my wife & her parents. We have a 7 months child ( Son) . Now how I can safe my family if my wife ludge complaint to Police/ Court against me & my parents ? Please help me & guide me what I need to do in advance ?