I have case going on for the last 19years regarding my house,intially the other side filed a case against me through G.P.A from actual principal owner ,accordingly i came to kow that the principal owner died and i produced a death certificate in the honorable court.Now the other side has again got a G.P.A from legal heirs .I approached the leagal heirs to my supprise they informed me that they had nothing to do with the property or the case as they had sold the property long ago.My Question is how can i prove that the leagal heirs nothing to do with the case in court of law.