Conflict in lawyers advice

 Hello

 I am an MBA student. I reside my late grandfather's house (which is still registered on his name) in Delhi.

 My grandfather has three son (out of which youngest one is not alive).My grandmother trick brothers to fight among themselves as well as with their wife.

When I returned after completing my graduation I saw all this and opposed her, result she (grandmother) started provoking her son against me .I am threatened to throw out of house with my mother and sister. My father remain drunk and completely in her (grandmother) control. By the advice on lawyers club I realized that they can’t throw us out.

my father and grand mother contacted some lawyer who told them that thy have full rights to throw us out...

My question is that is there is any way by which we may now what the acatual rule is. Please help us my family is reallly helpless against there ill will.

Thank You