Domestic violence and mental tourcher

Hi, I'm a 19 year old student. There are 5 members in my fam, 2 younger brothers, mom and dad. It's been around 22 years since my mom dad got married. My mom has been facing several issues since beginning regarding dowry and mental tourcher, later in 2009/10 (myb) she filed a complaint in women cell. Almost after 2 and a half months my father came up for settlement outside the court and my mother came back, after a year or a two he started tourchring her as well as us. He beats us, threaten us, speaks abusive defaming sentences, outrages me and my mom's modesty, he also use to spy us everywhere and got our itemised call records by unlawful means. Our paternal side is involved in this conspiracy. Now, he's torturing us more giving us threat that he'll abandon us and will take house and all the money. He has audio recordings in which he has intentionally provoked us and has not said much but we don't have other proofs, House's costudy is 50-50 with both the parents, my mom is a govt school teacher and father is a proprietor. We have life threat also, he has indirectly forced me to suicide, I've been visiting to psychiatrist for a long time(few months back) Pls, help us what are the remedies or punishments under the laws. As my mother can not afford education and upbringing of three kids on her own if we go for separation. Pls help me with the right legal advice asap.