"I'm here to answer your questions, not to fight with you", he countered and said regarding this.
Having dismissed KL Rahul and Virat Kohli on the fourth evening, Ngidi was on the brink of a five-wicket haul, but Rohit Sharma and Mohammad Shami saw off the remainder of his spell and unfurled an entertaining counterattack in the process. Both times the issue was the playing eleven.
As such Du Plessis has been fined 40 per cent of his match fee while his players have received 20 per cent fines. He wasn't ducking the questions but everyone wasn't convinced by his answers.
To borrow Abraham Lincoln's sentence about not being able to fool all of the people all of the time into a cricketing context, India has become a team that wins all of its matches in some conditions, nearly none of its matches in others, and still believes everyone will think they are the best in the world.
Kohli's team had a chance to create history.
Worldwide too, there is the feeling that India's no.1 ranking has been achieved because they've played at home nearly exclusively.
Here's the first of the Q&A.
India had not anticipated the kind of pitch they got here at SuperSport Park, conditions with which they are very familiar. Can Test matches just be won on intent, words and aggression without objective.
"What's the best XI? For me, it is about putting the foot on the gas and making sure we apply as much pressure as we can with our strongest 11", he said. We don't decide the eleven according to the results.
Reporter: My question was about the pitch...
"I am very honest about good things when it is right and this was an opportunity that we missed". You are telling me that you could have played the best 11. But you make one decision and you back it. One of them is to bowl dry, when a low economy rate is good enough for the captain, when wickets are not actively hunted down but come as a bonus.
"It was tough for us in India".
"[Makhaya] Ntini, Nel and Dale Steyn were my idols that I looked up to". What they chose to do, tells you how this team tackles situations and how much it backs its bowlers. "I think you could see that in this Test especially". When it came to a more direct "why Rohit and not Rahane" question, he said he was expecting a debate on that issue.
"We can blame the groundsman but we also have to blame ourselves", he said. Hubris, or indeed aggressive posturing in press conferences, can not mask these deficiencies in the playing XI. "A lot was spoken about Bhuvi as well but Shami performed in this game".
The Indian team's demeanour towards media personnel on this South African tour has been a departure from set protocol. The South Africans got the upper hand from there on, with Vijay falling at a point when Rahul and he froze for close to four overs. And to be fair to Kohli, on any other day of the Test, 57 for 2 in a session would have been a great result. I do have niggles but that is part of Test cricket.
About the difference between the teams in the series, he said, "Everyone has chipped in for us".
Kohli kicked it up a gear when the questioning turned directly towards his captaincy and how he has changed the XI in all 34 tests he's been in charge for.
Kohli: How many have we won?
Kohli's attitude has not win him many admirers. Two losses. How many draws?
"We should try to fight it out".
Indeed, particularly with the bat, India have been too reliant on Kohli in these two Tests.