They flew to Nashville. Bluebell, their dog, was sent to Saudi Arabia

Bluebell, seen here in England, was boarded onto the wrong flight earlier this month, sending her to Saudi Arabia rather than Tennessee. (Courtesy of the Miller Family)

Under other circumstances, the airline's mix-up might have sparked an amusing anecdote about how, when a couple moved from England to the U.S., their dog went on its own international adventure.

But Madison and James Miller say that Bluebell, a black Labrador mix, endured a days-long ordeal when she was mistakenly loaded onto a flight that took her to Saudi Arabia instead of Tennessee. They also say British Airways and its sister carrier, IAG Cargo, haven't done enough to resolve the issue.