About my dad

Hello sir/mam, My father name is Ekambaram residing in chennai. Im seeing my dad since my childhood used to torture my mom like hell still now she have a mark of 8 stritches in her cheek. He used to beat her like dog if someone asked from my mom's family he ll never give respect at all. once he bet my gandpa witg slipper and mom's younger brothers have no guts to ask my dad a question regarding this as they were very small that time and now they least bother about my mom as they have their own family and kids . My granny went old but still she is doing something for us. What ever she do no good name from my dad side use to say my mom as from beggar family no dowry and so on.. I called her many times to complain about my dad to police station but my mom just ignore my words and take me to my grany home . still now she is living like this. Going coming going and coming in order to live with my dad and their is no one to support her.With my dad torture i came out of my family and married a really good guy. After marriage my mom and my younger brother will come to my home if there is any problem with my dad. He is a big torturer inside my home but outside my home he has created a sweet personality by telling bad about us pity about him. But people are seeing this sometimes money speaks a lot. He have all bad habbits lik alcohol and ladies matter but used to say others that he is a very good person in the world. He would give even 100 Rs with lot of questions for household expenses but to his family and othrs he used spend money like water. Thank God now he have no money to spend like that. So he started going to everyone house near and started telling bad about us. When i was at home i used to protect my mom and now nobody. My brother is still young and dependent. Ive another brother who is married and having two kids. He never ask anything to my dad he never go for job and his wife also joined with my dad to torture my mom. Said bad about my mom to her family e.g my mom said bad about my mama and mami, now they are angry wit my mom by trusting that liar. He is 55 nw but still he dint change he is same asusual .usually give us mental torture and my mom mental as wel as physical torture. Is thr any way to punish him. I cant wait for god no more.. Waited for yrs.. But still my mom is suffering. He acts like as if he is not well but when he wanted to torture us his true color comes out. Plz say some really a good step to punish him...