Theatregoers have been unable to buy tickets for the Edinburgh Fringe Festival following technical issues with the Edinburgh Fringe's ticket booking service.
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A spokesman for the fringe festival said difficulties with the box office system had disrupted advanced ticket sales for the festival, which starts on 3 August.
The festival organisers said in a statement, "We recognise that the service we have provided over the last week has not been acceptable. We will continue to work over the weekend and we apologise for the inconvenience this has caused."
One disgruntled customer told Computer Weekly that he had been trying to buy tickets for the fringe for a week. He said he had been unable to get through to the organisers because customers were jamming the switch board.
Each week that the website was unavailable increased the likelihood that it will be overloaded by customers when it is finally up and running, he said. "The simple fact is it is going to be a mighty panic."
The festival says it is working to sort its technical problems out, and is planning to make another statement on Monday morning.
"Despite all of our efforts this week we are unable to open our box office," it said. "We are determined to have box office services operational as soon as possible and we will post a further update on Monday 16 June at 10am."
The festival has been working with software supplier Pivotal Integration. The company declined to comment.