Jessica, who has been rejected twice by the judges on the show in the past, last night won a place in the next round of The Voice after joining Jessie J's team.
The 17-year-old performed an acoustic version of the Brit singer's hit Price Tag, with all four of the coaches turning around for.
Speaking to the Daily Star today, Jessica hit out at The X Factor's production team for the way she was treated on the show in the past.
“The BBC were really kind and the production team were really kind and that does make a massive difference," she told the newspaper. “On The X Factor I had to arrive at 7am and didn’t leave until 11pm.
“I was stuck in a room all day without food or water. I was just sat around waiting all day.
“I wasn’t given a proper warm-up or the help the BBC gave me."
She went on to explain: “On The Voice you are given all the help and encouragement to perform well.
“It was an incredible moment when all four judges turned around.”
But it seems that while will.i.am and Sir Tom Jones heard something in Jessica’s voice, the X Factor judges disagreed.
She revealed: “The judges on The X Factor said I was an average singer and my performance was just average.
“They have their opinions and I wasn’t on top form that day. But they didn’t make me want to give up."
Browse promo shots of Jessica and the other successful Voice UK auditionees below...