121. (1) Where a complaint is lodged, or deemed to be lodged, with the Commission under section 119(1), and section 119(3) does not apply to the complaint, the Commission shall as soon as practicable give the complainant concerned a notice—

(a) acknowledging the lodging of the complaint or, as the case may be, its receipt by the Commission referred to in section 119(4), and

(b) informing the complainant of the complainant’s rights under section 128.

(2) Where subsection (1) applies, the Commission shall—

(a) handle the complaint in accordance with this Part, and

(b) inform the complainant within 3 months from the date on which the complaint is lodged, of the progress or outcome of the complaint.

(3) For the purposes of subsection (2)(b), the Commission shall be taken to have informed a complainant of the outcome of the complaint concerned where it gives the complainant a notice under section 122(5) or, as the case may be, section 126.