24. —The Commissioner shall not investigate any complaint made by or on behalf of a person if the complaint is one in relation to which the person affected by the matter complained of has initiated, in any court, civil legal proceedings and the proceedings have not been dismissed for failure to disclose a cause of action or a complaint justiciable by that court, whether the proceedings have been otherwise concluded or have not been concluded:

Provided that the Commissioner may investigate the matter notwithstanding that it is one to which this section relates if it appears to the Commissioner that special circumstances make it proper to do so.