Filing a domestic violence n dowry and maintainence

hello i got married 8 years back and from past four year my mil sil and my husband has been harrasing me for everything i have a kid who is four years from past 30 months my husband is staying out of the house i m staying in my matrimonial house with my husbands family my husband is staying in a rented house nearby they completely stopped giving money to me and staying in one house i have to cook seperately they have put cameras in the house i dont know for what my mil use to always ask to get money inspite they being toooo tooo rich then us i m paying the school fees of my kid i.e 2.5 lakhs a year from my fathers account all my personal expense and doctors expense and everything is taken care from my father..infact the biscuit my son eats also they have raised hands on me many a times. i dont have any proof of that but i have a pic in which my head is completely thrasshed coz my mil n sil banged it my husband had even tried to put a bottle full of dettol in my mouth...this is just ten percent of what i m suffering my son at this age is going mad i m taking him to counsellors i m completely fed up of this things i stay in mumbai i need the best lawyer to file domestic violence , maintainence and dowry i dont know what to do please some one help me out want to seee them behind bars thank yu