A former contestant on the game-show, Who Wants To Be A Millionaire?, says he will go to court if the producers do not reinstate him on the show.
Mr Declan O'Malley from Drumcondra, Dublin, said he had "no option but to pull out" of the show when he took part in it at the end of last month.
Tyrone Productions, producers of the programme, said he had no case and that he would not be reinstated.
If Mr O'Malley wished to take the issue before the courts, "that's his choice", a spokeswoman said.
Mr O'Malley, who reached £16,000 on September 30th using up one life line, was asked the following question on the programme:
"A bronze statue of an Irish statesman and writer stands in front of Trinity College.
"Is it Oliver St John Gogarty, Thomas Moore, Thomas Davis or Edmund Burke?"
Mr O'Malley thought it was Edmund Burke but phoned a friend, who said he thought the answer was Thomas Davis.
"That really threw me, so I decided to go 50/50 and they took away two answers," he said.
"But the two that were left were Thomas Davis and Edmund Burke. If I got the wrong answer, I was going to drop down to £1,000. I had no option but to pull out."
Mr O'Malley said both answers were potentially correct given that Edmund Burke stands inside the railings in front of Trinity College and Thomas Davis stands some way up Dame Street, also, he argues, in front of Trinity College.
His solicitor agreed there was a case to answer. He said it was understood by anyone entering the contest that there was just one correct answer to each question.
Mr O'Malley is demanding that he be reinstated on the show.
Tyrone Productions' solicitors, however, told Mr O'Malley's legal team on Tuesday that he would not be reinstated.
"We have absolutely no doubt that the question was perfectly correct," a spokeswoman said.
She said that while the statue of Thomas Davis was near Trinity College, there was a statue of the Four Trumpeters, a grove of trees and a statue of Henry Grattan between Thomas Davis and the college.
"The statue is sooner in front of the Bank Of Ireland than Trinity College."
Mr O'Malley said he firmly believed he had been "badly treated" by the producers.
"They are in breach of their own rules," he said. "I have told my solicitor to fight this. I will go to court if it comes to it."
