Husband is staying separately form 2 years

Hi Team, Please help or suggest Husband had left me in my mother's place for 5 months and went to his parents house. Had an argument about going back to Sydney, he lied and got me to India saying his parents are unwell and also child needs admission in a residitional school , he will work from home in India for the same company for 3 months but he has left the job and came back to India without telling me. After coming here child didn't get admission in the school we wanted and then we also looked few other residential school but haven't liked them much. And I got to know that husband has left job there.. so I started telling him that we will go back to Sydney as child has stayed in Sydney from the age of 2 years and now he is 10 years but husband refused to come back and I thought if we go he will come after us, I told him also he said do whatever so I went with child and started his school there, as school is free for us I didn't had too much difficulty on that, but husband didn't come and didn't receive our calls and blocked my number when I called inlaws to check about him inlaws were very rude to me and all.. then after almost 20 months he messaged saying if I am coming back he will look for a house in Bangalore and also take responsibility of child's school and also he will go for work and all. So I left my job vacated Sydney and came back, but now he is saying he won't do that. He wants to stay with his parents in village and wants us to stay there if we like and he was very rude to my parents and grandparents too as they came to talk to him. So I came back to my parents place now and staying here only from more than a month now. Please suggest what can be done here legally.