SIMON Cowell last night hit back at claims Sunday's X Factor result was a fix, dismissing fans' fears of a conspiracy as "nonsense".
Viewers expected the public vote to decide which acts got to next week's final as in other years, but instead judges picked from the bottom two after a sing-off.
Angry fans suspected the change was brought in at the last minute to ensure headline-grabbing Cher Lloyd, 17, got into the final rather than mumsy Mary Byrne, 51.
But speaking exclusively to The Sun, show boss Simon said: "We haven't done anything wrong."
He added: "All the artists knew there was going to be a sing-off.
"Mary and Cher were told last Monday to prepare a song for a sing-off if necessary."
And the producer said the format could not have been changed due to Cher coming bottom of the public vote - because he has no idea of the rankings.
He explained: "I genuinely do not know the exact placings of the artists - who is top and who is bottom. I never know those details until the series is finished."
And he said the confusion is due to next week's final having four acts instead of the three always featured in previous series.
He said: "There has always been a sing-off when there are five people left in the competition. This is a lot of nonsense about nothing."
More than 200 fans have already made official complaints to telly watchdog Ofcom and a further 50 lodged complaints with ITV.
Meanwhile, websites were flooded with criticism. On Twitter the term "hate Cher" became one of the most-tweeted phrases in entire WORLD.
But Simon said he had only made the changes because fans LIKE surprises in the format.
He said: "I'm always looking for ways to keep the show fresh.
"We knew we wanted four people in the final this year and I don't want to be accused of doing the same thing.
"It's more exciting and gives more people a chance to win it. That decision was made long ago - five or six weeks ago.
"It adds to the mystery and audience love the surprise element.
"We are doing our best to change the format. It's more exciting to have a sing off."
Simon and fellow judges Dannii Minogue, 39, and Cheryl Cole, 27 - who dazzled yesterday in fuchsia heels - all voted for Cher to go through on Sunday.
They made their rulings despite the teen rapper - spotted yesterday entering a recording studio - SOBBING during her sing-off.
She had also given wobbly performances on Saturday night - as well as alienating viewers by talking back and rolling her eyes during judges' criticism.
But last night former Tesco worker Mary had found reason to celebrate - after landing a record deal with Sony.
She told The Sun: "When I was leaving the show, Simon came over and said, 'I'm really sorry that you've got to go but you've got your album'.
"I can't wait to sit down and start working on it. I'm like a two-year-old, I'm so excited."
The Dubliner said she was given her sing-off track, or "save me" song, at the weekend.
Mary said: "I was told on Saturday, because we were given our "save me" songs.
"I got a bit stunned at first because I did think it was just public votes. I do feel sorry for my fans because they voted in their thousands, God bless them."
She added: "I knew then my days were numbered. I hope I would have stayed in.
"The public have supported me right the way through, and if they had done it that way, it would have been great - but that didn't happen."
But her supporters were still seething over the muddle - saying they had paid for their phone votes in the belief they were voting their favourites into the finals.
They noted that days before Sunday, Simon said on ITV2's Xtra Factor: "Finally, we can put this back in the hands of the public." And on Saturday night during the main show, host Dermot O'Leary said: "Now it's all in your hands. It's your votes and your votes alone that can get your act safely through to the final."
Even X Factor's website was declaring Sunday's show would be determined by the public, stating: "The act with the fewest votes will leave the competition."
Yesterday furious Sophie666 claimed on The Sun's online forum: "The only reason the rules changed is because Simon panicked thinking that Cher would be kicked out. It was very unfair and just plain wrong."
Ofcom last night ordered an investigation as the number of claims about the show - watched by around 17 million at the weekend - continued to grow.
A spokesman said: "We have received a number of complaints and are currently looking through them to see if there has been any breach."
Telly rules forbid broadcasters "misleading" viewers. Clause 2.14 of the Broadcasting Code states: "Broadcasters must ensure that viewers and listeners are not materially misled about any broadcast competition or voting."
Meanwhile, ITV says ONLY the public vote will decide the final results of the series this weekend.
Cher is up against Rebecca Ferguson, 24, Matt Cardle, 27, and boyband One Direction.
http://www.thesun.co.uk/sol/homepage...ix-claims.html