Harassment by husband and in-laws

Hello Sir/Madam, I am married since February 1995 and have 2 children they are 18 and 16 years old. My husband harass me mentally, physically , finically ,verbally and socially every day for every single thing in the house, thereby making my life miserable. At the time of marriage my in-laws hides all the realty about their finical status and their son occupation. After marriage I knew the realty about them , that they don’t have a house and their son is doing nothing not even educated ,he has started for demanding money and bike from the very first day and day by day their behavior becomes bad to me he was not given me a single penny even for my medicines during the pregnancy , but I didn’t tell anything to my parents after bare them for 3 years I tell the truth to my parents and we have file a complaint to the women cell Delhi , then after they were ready to give me money for house hold expenses but after few months they stopped giving money to me . all this continues from last 20 years with me and my children I really very helpless as , he n my MIL always demand money from me. Though I always give them the share from my salary still he asks me to share half of their house hold expanses. He doesn't even lets me know where he spends all the money I give him. I m really scared and under severe mental tension, I am tolerating all this from 20 years and but now everything is intolerable to me kindly help me and guide me . plz suggest legal implications in this matter and oblige. I will b very grateful to you. Thanks in advance....awaiting your legal advice....