Festival Republic has blamed the company running its bars for the huge queues that saw fans miss headline sets over the weekend.
People complained it took two hours to get a drink at Community Festival, where the likes of Liam Gallagher played, in London's Finsbury Park.
Festival Republic says the queues were because not enough staff turned up.
That explanation hasn't gone down well, with organisers being accused of "passing the buck".
Community Festival took place over one of the hottest weekends of the year - but getting your hands on a drink was not easy.
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Others posted footage of the queues.
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Some people at the festival, which featured the likes of Run The Jewels and Queens Of The Stone Age on Friday and Saturday, were also genuinely worried by the number of people being packed in.
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On Sunday evening, after being hit by so many complaints, organiser Festival Republic put out a statement, which blamed the company running the bars.
In the statement, The Workers Beer Company says: "Here in Finsbury Park on Friday and Saturday there was unprecedented failure of up to 40% of our staff to turn up.
"As a consequence people had to wait an unnecessarily long time to be served. For this we unreservedly apologise to the audience."
The statement goes on to say Festival Republic bore no responsibility "for us letting down the audience and we have already apologised to them".
But it's that last bit that hasn't gone down well with fans.
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Newsbeat has contacted Festival Republic for a further statement but so far, they haven't got back to us.
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