My uncle and aunty capture my property and made register documents

My grandfather has 4 children (two boys, two girls). my grandfather died in 2011. at that time all people decided uncle will maintain the property and when my sister will marry, they will divide it into equal parts basis of valuation. but my uncle and aunty did proper registration of that property, what should I do next. I am living in Vadodara, Gujarat. we talked with our relatives but they are not supporting us and if they are trying to tell my uncle and aunty, that people quarreling like anything. I also tried so much time but they said don't come here otherwise it is not good for my life. my father died in 2001 and my mother put efforts in our growth. I was 10year old when my father died. I collected all the documents(family tree of my grandfather, the death certificate of my father and grandfather, registration documents of the property, 7-12 Utara, etc...) what should I do now and is it criminal offense or civil offense or both? and what are the ways to tackle this case and if you want more information contact me on my this email id - [deleted]. so I will post details here. and soon I will update my google drive link of all documentation related to this case. Please help me with this, your advice is very important for me.