57. Investigations by the Ombudsman in respect of the following complaints shall be conducted in accordance with this Act:

(a) any complaint received by the Ombudsman on or after the establishment day;

(b) any complaint received by the Financial Services Ombudsman or the Pensions Ombudsman before the establishment day where a decision of the Financial Services Ombudsman or the Pensions Ombudsman, as the case may be, or a decision of the Ombudsman has not been made.