If the responsible parent seeks a review of a Notice of Debt pursuant to 19-A M.R.S. §2451, or seeks relief in a court of proper jurisdiction, and if the Division receives the request for review or service of pleadings within 20 days after service of the Notice of Debt upon the responsible parent, it shall stay collection action, except collection action pursuant to 19-A M.R.S. §2306. The Division shall accept ordinary mail service of copies of all pleadings, which shall be addressed to the Division representative whose name appears on the Notice of Debt. Service upon the Department shall be in addition to any other service required under the Maine Rules of Civil Procedure.
10- 144 C.M.R. ch. 351, § 10-11