Possession

I am in lawful possession of an area of 400 sq ft which I use for parking car. This possession was given by my late grandmother - owner of the property in 2002. After her demise, in 2006, her son and beneficiary to her property named 'A' allowed me to continue possession of this area. Since then it is with me. 'A' is my uncle. 3 years back, 'A' gifted 2/3rd part (demarcated) of this property to me. He also gifted 1/3rd part of this property to another family member. But physical possession of the whole property remained with me. Early 2018, the other family member tried to take physical possession of the 1/3rd part by breaking the outer wall, keeping few moveable items inside. He has been trying to commit mischief, engage goons to take possession, use abusive language, etc. What is the legal course of action. How can I retain possession to entire area of 400 sq ft. What interim relief I can get from the Courts. How can I repair the broken outer wall as rats are entering and eating the parts / pipes of the car. As also there remains a fear of my car / car parts being stolen or damaged.