If there has been a final judgment on a case, but you were not notified of the hearing is there anything that can be done?

Possibly. See an attorney to see if a motion can be made to set aside the default judgment -- generally something that can only happen for good cause. You do not explain why you did not receive notice. If you have a good reason for not receiving notice (e.g., you were in the hospital in a coma), a court may set it aside.