How to enforce property agreement

Sir wishing u.vill choubara distt Alwar .Last year we exchanged property between my Tau ji (father's elder brother) and me.my father expired when I was 1year old(1984).we write this agreement on 100₹ stamp paper and notary's signed.but they refused to give me trees on their land so I verbally cancelled the agreement but did not went to notary.this year I also told them to exchange property but they refused so I sold my own property .I first asked to my both Tau ji but they refused so I sold to other neighbour.now Taiji has put two case on me that I sold his property because they r following last year paper.second they want to divide home property with my father's sister (05) also.verbally it was my father property.sir what I do now.i m in Airforce staying with my mother and family.Hindu