My Husband deserted wife and two female children

Hello Sir, My Husband is a Public Servant in a Gazette Post drawing a fancy salary. Its 19 years we got married and are blessed with Female children doing their graduation and second child studying 10th class. My husband is an irrational personality with high amount of male domination. He was reluctant to provide us basic needs(clothing and other accessories for children and for me) except food. He gives Rs.30,000 per month and I need to take care of Rent(15,000), Food and other things. Its not sufficient and I am managing the addiditional expenses with my petty earnings and with my parental support. His salary is more than 2,00,000. . Verbal Abuse, Character assassination, Domestic Violence is a regular routine. With my Petty earnings and with my Parental support, Children requirements are getting fulfilled. I am bearing his shabby treatment and violence for the sake of children. Everytime he comes with new conditions and demands, if I am not attending it, he blackmails of divorce. Now the problem is 5 months back he demanded me to stop taking tuitions or I should give my earnings to him. I said No.He left the house and deserted us. I have his ATM card and he gave permission to draw monthly Rs.30,000 and I am doing that. The problem is I have to join my daughter in Intermediate and should pay My elder daughter's College Fees. I want to claim Sustenance . Please advice me how to handle.