Tickets for a long-awaited concert are finally booked — only for the confirmation email to never arrive. Or your payment goes through twice. Or the app won’t let you access your tickets just hours before showtime. Ticketmaster 24 hours Customer Service These situations are stressful. They’re also more common than Ticketmaster would probably like to admit. Knowing the Ticketmaster 24 hour customer service phone number before you’re in a panic is the single fastest way to solve any ticketing problem.