Some of them shouted, "We got scammed!"
In San Francisco Friday night, about 100 fans of pop band 5 Seconds of Summer would not leave the front of the Fillmore.
They were told their tickets were bogus. The girls say they paid hundreds of dollars for them because the show was sold out.
They were purchased on StubHub and Craigslist and appeared to be from the same seller.
"One mom met at a Starbucks. She bought it for her daughter whose birthday was Friday. She's crying and my girls were crying. It's awful," said Melanie Feliciano, the mother of a fan.
"They're my idols. I wanted to see them so badly. This is the only chance I got. I finally convinced my parents to let me go and I find out it's all a scam," said Demitra, a fan.
Craigslist does not offer refunds, as it is not involved in transactions. StubHub policy indicates the girls will get a full refund.