Neighbor Encroached Road

Dear Sir / Madam Half of my road at the front of my house is encroached by the original land owner. There is a 20 feet road in front of my house which joins the main road one side and the other side is supposed to join 10 feet road. But the original land owner has blocked that road with a wall. Total width of my plot front portion is 33 feet. 20 feet road is shown in front of my entire plot (i.e. 33 feet) in my approved site plan. Also the boundary line of west side on my registered document mentioned as Road. However, the original land owner has encroached road about 15 feet of my front portion (i.e. I have access to the road only from remaining 15 feet out of 33 feet of my front portion). Please advise how to resolve this issue. I have the following documents, 1. Site Plan approval shows road 2. Building Plan approval shows road 3. My Land Registration Documents shows Road Is it sufficient to take action against him? Please advise the procedure (i.e. file case in the court or first complain in union office / tahsildar etc.