You don't give any specifics of your situation. That having been said, before a default divorce is granted, the respondent you would have been given time in which to answer the complaint and give your side of the story. If you failed to do so, then you may not be able to overturn the divorce. For example, if your former spouse the petitioner could not locate you, they could have "served" notice of the court action via publication in a newspaper, as per order of the court.At this point, you should consult directly with a local divorce attorney.