Large quantity dug soil dumped on my land & prevent to enter my land

I have 2 agriculture infertile land in the middle of rich group. I sold major part of land 15 years ago to use their asphalt road connected to main road and they agreed. From last two year they are not allowing to enter through, telling it’s our private road. So we are using old Kachcha path that connected to a village road, which passes through their land. Even on this path they dug very big pits to prevent us to enter. Two years ago they constructed a shade and all the dug soil dumped on my land. When we objected they said will remove soon. Later they dumped more and more, its more than 300 trucks. For two years we told them repeatedly to remove the soil and rubbish, now they are saying we dumped on our land it’s not yours and you don’t have the way to enter, sell your land. But I don’t like to sell my land. What action can be taken to remove the dumped soil from my land? Can he stop our way in the future legally even the kachcha path? This path was used by all farmers in the past