It took me months to get it figured out because the people responsible for serving me just ignored me. They refused to believe they made a pretty massive research mistake. We had different middle names and birth dates.
Either way this would be a PITA, but it seems the easiest thing to do would be to just go ahead and show up in court. The judge would have you there for about 2 minutes before smacking down the lawyer for the side that summoned you, and sent you home. No reason to spend months working it all out...