Perhaps you can bring suit for slander, libel, defamation of character, etc. and ask for an injunction.
[In accordance with the Avvo community guidelines, this communication does not constitute "legal advice", nor does it form an attorney-client relationship.]
You should contact the district attorneys office or whatever your local prosecutor is called and ask for their advice. You may be able to have them charged with filing a false report or making false statements to a government agency or even harassment. If criminal charges are not forthcoming, you may be able to sue for harassment and/or defamation.
You will probably need to hire an attorney to handle this. Possibly a case worker or someone at the District Attorney's Office may be able to intervene. Good luck.
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