Unit problems

a company leased 160 acres from then proposed a unit leaveing me out ...after a back and fourth i was advised by an attourney to take 36% of the unit and sign a volintary agreement . the well site is onmy property now and the well has been drilled about 4 months ago produceing oil and gas .. i have been told that they want to drill a few more wells on my property ....the unit is 250 acres big and it is redicously formed giveing the ajoining mineral company most of the unit when the wells will all be on my property ..... what do i do ..?