Not really. Her legal name was your last name as a result of the marriage. A Judgment for divorce provides an oppurtunity for the wife to resume the use of her maiden name, if she so chooses. You cannot force that on her. You may want to inform the police as she maybe using the last name to avoid creditors.
there is nothing you can do. she can call herself santa claus if she wishes. what she is doing may be a fraud on creditors but is of no concern to you.
As gary stated, the5re is nothing you can do about this. As long as your ex wife's use of your last name does not affect you, there is nothing you can do about it.
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