A Dunwoody couple hoping to celebrate their 20th wedding anniversary with a July trip to see jam band Phish at New York’s Madison Square Garden instead found themselves suckered into paying $10,496 for what they thought was $400 worth of tickets through an online broker.

As detailed in a complaint filed last week, Kimberly and Kenneth Copeland realized after they bought the tickets in February that they’d been phished away from what they thought was a Ticketmaster website to an unknown vendor’s website and tried to undo the purchase, to no avail.