My Brother's wife torturing him and my all family members and blackmailing for false dowry case

Dear sir, Mere bhai ki shadi 4years pahle hui thi, Mere ghar mere parents, my younger brother and his wife & his 3yrs old son, and me and my wife and my 2 sons ha Jab mere bhai ki shadi hui uske kuch hi Dino ke bad se ghar me kafi ladaiya hone lagi mere bhai ki wife meri mother an wife se ladne lagti chote mote Kam wagers par ham logo ne socha ghar ki ladies me hota hai Thora bahut hamne uska Sara kucch alag alag karwa Diya ghar me hi wo and mera bhai first floor pr rahne Lage baki ham sab log ground floor pr alag rahne Lage Uske bad bhi wo kisi na kisi tarike se ghar walo ki pareshan krne lagi kabhi kuda upar se niche ghar me gira dia kabhi Pani gira Diya is tarah ki choti moti bate hone lagi, h logo ne kafi samjhaya bhi mere bhai ne bhi kafi samjhaya usko bhi ulta sidha bolti ha abuse tak Karti ha, bhai ke saath be kafi ladaiya Karti ha bat bat par dhamki deti ha tum logo ki jail me chaki piswa dungi etc. Uske ghar walo ki mere papa mere bhai ne kafi bar bola usko samjhana Ko wo log ulta hame hi dhamkane lagte hai dowry case or denge AK hi ghar me rahte ha merre bhai ko ham logo se baat tak nahi karni deti agar Jara SA bhi ma baap se bat kare ghar me shor kat deti ha gali bole lagti hai kisi Ko bhi ghar me kuch bhi bolti ha. Merre bhai ko to AK tarike se bandhak jaisa Banya hua hai daily kisi na kisi bat pe Dono me ladaiya Hoti ha, uske AK jija ha no lawyer ha uski dhamki deti ha mere bhai ko tumko aur tumhari sari family Ko jail karwa dungi, ham log kafi pareshan ha, bhai ko kabhi bhi kuch bhi demand Karti ha khane ke liye kabhi scooty kharidana ha kabhi kuch wo mana karta ha mere pas paise nahi ha ghar ke ayur bhi expenses ha but us par koi fark nahi padta Sir/Madam, My humble request Please suggest us right way what can we do in this situation.