Parent's land cheated by brother

My parent's agri land of 1.4 acres and 7.5 cents of house plot was registered on his name by elder brother during 2004 by 1.brainwashing his 3 sisters & 2 brothers 2.Just giving 10k for each sister and 70k to only his next brother and giving lots of fake commitments that he will take care in future 3.I am younger brother and he didn't give any single amount for me So many times I asked to settle the amount ,eveytime he told financialy stuck with family issues he will settle later.Year 2008 I fedup ,asked to give back my share of lands ,shouted  and said finally give later  ,i escalated this to his elder son who is working in singapore ,he replied by mail that the issue is between you and your brother I can't give single rupee. Also my father is no meaning to me why I have to pay for him. Year 2018 Aug' 20th elder brother and his elder son came to my home that time i made clear and I asked both of them to give back my share of my parents they agreed but after going back now refusing.help me