It is hereby made the duty of the attorney of the corporation commission to make a special study of the public utilities laws of this and other states and the interstate commerce act, to prosecute and defend all suits and proceedings in behalf of the state, in the name of the state, in connection with the acts of the corporation commission, and on behalf of parties complaining of unjust discriminations by a public utility, or other violations of this act. The attorney shall, when such attorney believes or when such attorney is notified by the corporation commission that it has knowledge or good reason to believe that any classification, rate or charge made by any public utility in this state is unjust, unreasonable, or discriminating, whether such rate or charge is local, special, or general, or other matters concerning such company in the operation of its utility in the state of Kansas, is unreasonable or discriminative or violative of the laws of Kansas, make complaint in writing to the corporation commission, in the name of the state on such attorney’s relation, and the corporation commission shall proceed to consider and determine such complaint in all respects as is provided for the hearing and determination of complaints in other cases.