How could I get my agricultural land back ?

My father was purchased agricultural land near a village in Telangana have been occupied. This property belonged my late father who passed away in 2013. He had worked in State road transport corporation for many years and during this time, some of the villagers took illegal possession of our property and began cultivating illegally. In June 2019, we tried to survey the land by govt surveyor but the occupants obstructed and did not allow us to proceed. During an informal enquiry with the VRO, REVENUE INSPECTOR TheY had mentioned that the occupants were not holding of any legal document So, we filed a formal complaint with the VRO/MRO but did not receive any response. Then I gave return request to District Joint Collecter. Then also MRO office people no one is reponding. The deputy Tahsildar saying he will order to survey again the survey name is enjoyment survey it means the property belongs to who are UNDER cultivation or in position it means myself won't get land. I have all kind o