Police harassment even after winning in high court

I own a land, the land was in dispute at the time of purchase, so I fought caes and won in lower court and won in hight court by default (as the other party dint not show up in court, so the Order was passed in my favour) it has been more 5 years now, I have rented out the property to restaurant (its an Open land), Now every time my tenant start working the other party(people who clame the property) file an complaint of illegal possession on me and ghe police comes in to stop the work Time and again I have presented police with all the documents from sale deed, transaction details at the time of purchase, high court order and what not, still the police do not let me work. They are adament that they will investigate, this has been going for almost a year. First they were not even providing me with the copy of complaint filed againt me, after almost 8 months of fighting they provided me the complaint, So now I want to get over this matter and cant see any solution, what is the use of high courts order if i dont get to use my own property