Madonsela urges MPs to exhaust all sources of info on Nkandla
Madonsela said she had expected MPs to allow her to shed light on the issues contained in her report.
In her report released last year, Madonsela found President Jacob Zuma and his family unduly benefited from the R246 million upgrades to his private home in KwaZulu Natal.
On Thursday night, opposition MPs tried in vain to convince the African National Congress to allow Madonsela and several other people to appear before a parliamentary ad hoc committee.
Democratic Alliance Chief Whip John Steenhuisen said the majority party has been unreasonable and irrational.
"It's just completely ridiculous that the one key piece missing out of this whole process is the Public Protector and they refuse to call her."
Madonsela said she had expected Parliament to allow her to shed light on the issues contained in her Nkandla report.
But the police minister Nathi Nhleko responded with his own findings that Zuma doesn't have to repay a cent.
She said she has information she wants to share with Parliament regarding the president's incorrect impression of what her remedial action required.
The public protector said Zuma was required to determine how much he was going to pay, assisted by the Treasury and South African Police Service.
She added no minister was asked to make a determination or to advise the president.