Cape Town - The official opposition Democratic Alliance (DA) said it was considering taking legal action against the state oil and gas company, PetroSA.
DA energy spokesperson Hendrik Schmidt said: "Time has run out for PetroSA.
"Thirty days have elapsed since the Democratic Alliance filed its internal appeal against PetroSA's decision not to comply with the DA's application in terms of the Promotion of Access to Information Act (PAIA)."
"The DA will now consider taking legal action against PetroSA."
On May 23 the DA used the PAIA to request that PetroSA make available "all recorded information and documentation relating to the transaction and contract (awarded on 15 October 2002) between PetroSA, Imvume Management and Glencore International," reported Schmidt.
He said this was the contract which lay at the heart of the Oilgate scandal and which saw PetroSA make a double payment of R15m to Imvume Management for a single shipment of oil condensate.
Imvume allegedly used the first of these payments to make an R11m donation to the African National Congress, said Schmidt.
"In refusing to comply with the DA's original application PetroSA stated, on July 19, that "after consideration of the request, representation by the affected party (Imvume Management) and all the relevant legal issues in this matter, PetroSA has decided not to grant the request.
"This is so, on the basis that the recorded request concern commercial information of the third party that is confidential."
"The DA believes that PetroSA's decision was incorrect and that the PAIA legislates for mandatory disclosure if the records concerned reveal evidence of a failure to comply with the law, or if the public interest in the disclosure of the record clearly outweighs the harm that the disclosure might cause.
"The DA therefore submitted an internal appeal, as required by the Act and appealing PetroSA's decision, on July 22."
"The DA has now referred the matter to its lawyers and will consider what action to take once it has received a legal opinion."
PetroSA is due to appear before the Standing Committee on Public Accounts on Wednesday.
Schmidt said there remained many unanswered questions surrounding Oilgate, and the contract between PetroSA and Imvume Management.