Property in father's name occupied by uncle and grandfather

My dad's property . M apne parents ki single girl child hu i have no bro and sis .. Jo mere grand pa and mere chachu hai wo mujhe or mre mom dad ko acha nhi mannte kyuke wo kihte hai ke hmare ladka nhi hai so unhone mre dad ki jameen hai village mai 4 killas wo apne paas rakhi hui hai dad ko wo waha jane bhi nhi dete wo bolte hai ke dad ka waha srf 1 killa he hai lekin hmne papers niklwaye hai usme wo jameen dad k naam hai wo manne ko teyar nhi hai mre father mentally upset rehne lge hai is wjah se kyu m evrybody gave taun