OBS_VALUE: Any participating supplier may complain to an agency if it believes the agency has not followed the Rules. An agency must consider and respond promptly and impartially to a complaint. An agency must try to resolve any complaints in good faith. An agency must promply inform all of the unsuccessful suppliers in writing of its decision to award the contract to a particular supplier. Suppliers that have submitted their complaints, have further redress for an independent review; mediation or alternative dispute resolution; an investigation by the Auditor-General/Ombudsman/State Services Commission/Commerce Commission or hearing before the Court.