(1) Whether the policies of PetroSA have changed with regard to the prepayment for the purchase of bulk petroleum products from external suppliers since 1 July 2022; if not, what is the position in this regard; if so, (a) what necessitated the change and (b) who authorised the changes to the policy; (2) what checks and balances have been put in place to ensure that the products paid for (a) are actually received and (b) meet the appropriate technical specifications; (3) what credit checks and/or other vetting procedures were utilised prior to implementing the specified change; (4) on which provisions of the Public Finance Management Act, Act 1 of 1999, does PetroSA rely to make such prepayments?