330Power to request the provision of information

330  Power to request the provision of information  (1) This section applies if the Commission is satisfied that a person who has made a claim:  (a) has information or a document (including information or a document relating to costs incurred by the person, such as a receipt) that is relevant to the claim; or  (b) may obtain any such information or a copy of such a document without unreasonable expense or inconvenience.  (2) The Commission may, by notice in writing given to the person, request the person to give:  (a) specified information or a specified document; or  (b) information or a document in a specified class of information or documents; to the Commission within 28 days after the date of the notice or within such further period (if any) as the Commission, on the request of the person, allows.  (3) If the person refuses or fails, without reasonable excuse, to comply with a notice under subsection (2), the Commission may defer further investigation of the claim until the person gives the Commission the information, or a copy of the document, specified in the notice.