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I am sorry to hear about this situation. See HERE (warning, instead download). In order to enforce zoning ordinances and to force a state agency to "do its job," a concerned party may file a Writ of Mandamus in Court. Although the link is for NC, it discusses general principles applicable to AR as well. The reason why I used an NC link is because it closely mirrored the situation you outlined.
So what is needed is a LAWSUIT under a Writ of Mandamus. It is not as simple as filling out a form - this is a very involved procedure. It is recommended to use counsel if possible. You can find a sample of the writ in almost any local law library, free of charge. I know you were hoping for a "quick" solution, but in these kinds of matters, the proper process is the Writ which is a little more involved.
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