Regarding property

SIR/MADAM I MAKE A PROPERTY DOCUMENT ON 100 RS BOND IN 2005 AND MAKE HISAR WHICH WE WRITTEN ALL THINGS WHICH ONE NEEDED. IN THIS HISAR (ON 100 RS BOND) BOTH WE BUYER AND SALER HAVE SIGN ON IT. WE HAD GIVEN HALF PAYMENT TO HIM AND HALF PAYMENT AFTER SIX MONTH AND WE TAKE POSSESSION AND TAKEN ELECTRICITY ON OUR NAME AND PAID THE GRAMPANCHAYAT TAX ON BEHALF ME. BUT AFTER SIX MONTH WE CANNOT GO TO APPROACH HIM NEITHER HE APPROACH US WE DONT APPROACH BECAUSE HE HAVE A LOAN ON THIS PROPERTY WE ALREADY CLEAR BEFORE THAT IF YOU DONT CLEAR LOAN AMOUNT I WILL NOT PAY HALF PAYMENT. WE TRY TO APPROACH HIM BUT HE EVERYTIME CHANGED HIS ROOM SOME OTHER PLACE. AFTER THAT SOMEHOW WE TAKE ADDRESS AND SENT HIM A NOTICE. NOW I AM LIVING HERE SINCE 2005 NEAR ABOUT 14 YRS. NOW HE TOLD TO AGENT THIS IS ON SALE AND NOW HE TRANSFER HIS NAME TO HIS SON. SIR KINDLY SUGGEST ME WHAT TO DO.