281 Fre-investigations by the Commission 42. Before proceeding to investigate any matter in terms of this part, the Commission shall inform the complainant and the data controller to whom the investigation relates of the - (a) (b) details of the subject matter of the investigation; and right of the data cont'orler to submit to the commission, within 14 days, a written response in relation to the subject-matter of the investigation. Investigation proceedings of the Commission 43. (1) For the purpose of the investigation of a complaint, the com- mission may (a) summon and enfolce the appearance of persons before the Commission and compel them to give oral or written evidence on oath and to ploduce any iecords and things that the Commission considers necessary to enable it to investigate the complaint; (b) administer- oaths; (c) receive and accept any evidence and other information, whether on oath, by affidavit or otherwise, that the Com- mission deems fit, whether or not it is or woulcl be admissibie in a court of law; (d) apply to the Magistrate Court for a warrant to enter and sealch premises if there are reasonable grounds for sus- pecting that this Act has been contravened or an offence committed and evidence of that contravention or. offence is to be found on the premises specified. (2) A warant issued under subsection (1)(d) shall be an authority for the Commission or any of its officers or staff, any time within seven days of the date of issuing of the warrant to enter the ^t plemises as identified in the wallant and to search them, inspect, examine, operate and test any equipment