Selena Gomez was reportedly frustrated and seemingly intimidated at this weekend's Jingle Ball.

Gomez was performing at KIIS FM's 2013 Jingle Ball concert in Los Angeles when sound troubles got to her. Los Angeles Times reviewed the concert and noted that there were sound problems throughout the event.

Gomez responded by complaining about the technical difficulties.

"Sorry, the sound isn't working," Gomez yelled to the crowd, according to Us Weekly.

Next, the 21-year-old "Slow Down" singer alluded that better acts were lined up to perform after her.

"Are you guys having a good night? I promise, a lot cooler people are gonna come out tonight," she said. "Is it okay if I perform two more songs, and you guys can get to it?"

Apparently, the singer felt that her performance was low on the concertgoers' lists.

"I have to thank you guys so much for allowing me to be able to perform the music that I love, and I have to say that before you guys go on to the people that you care about."

Gomez then sang only one additional song, instead of the two that she promised.

"I really appreciate you supporting everything that I do," she said before performing her last bit. "So this next song is the first song I had hit No. 1, and it's called 'Come & Get It'."

Gomez's frustration and insecurities got her fired up.

"She for sure said 'what the (expletive),' ... You could hear it crystal clear," a concertgoer told E! News.

Gomez walked off the stage early and did not finish her set.

Ariana Grande, a Nickelodeon star, also experienced sound problems but seemed to handle it better.

"I'm sorry the mix was off the entire time," Grande said according to Los Angeles Times. "At least you know I'm not tracked."

Perhaps if Gomez focused on her success instead of publicly diminishing her performance to a lesser one, she may have been able to finish her show with pride.

Check out Gomez's f-bomb in the video below: