Vinod Hindocha has left South Africa none the wiser about his daughter’s murder.
Anni Dewani was killed while on honeymoon with her husband, Shrien, in Cape Town in 2010.
Hindocha and his brother, Ashok, visited taxi driver Zola Tonga in his cell where he is serving an 18-year sentence.
“We didn’t get what we wanted. He is still not telling the truth,” said Hindocha, who left South Africa on Sunday.
Anni was shot and killed on 13 November 2010, during an apparent hijacking in Gugulethu.
On Wednesday, the parole board is expected to make a decision as to whether Tonga will be eligible for parole in September.
“We were happy with the hearing. We believe it was on neutral grounds,” said Hindocha.
He said the family were hoping that Tonga is not granted parole.
Dewani, a British businessman, was acquitted on 8 December 2014.
Xolile Mngeni and Mziwamadoda Qwabe both received life sentences.
Mngeni died in 2014 from a brain tumour.