reasonable time, for the amicable resolution by the parties concerned of the complaint, notify, in writing, the individual who made the complaint of his decision in relation to it so that the individual may, where he considers that he is aggrieved by the decision, appeal against it under section 51. (2) (a) The Commissioner may, for the purpose of the investigation of a complaint, order any person to – (i) attend at a specified time and place for the purpose of being examined orally in relation to the complaint; (ii) produce such book, document, record or article as may be required with respect to any matter relevant to the investigation, which he is not prevented by any other enactment from disclosing; or (iii) furnish a statement in writing made under oath or on affirmation setting out all information which may be required under the notice. (b) Every order made under paragraph (a) shall be in writing and signed by the Commissioner or an authorised officer. (3) A person on whom an order under subsection (2) has been served shall – (a) comply with the order;