Can you help my neighbor with this invalid United ticket?

When Silvania da Silva booked air tickets on United and Azul Linhas Aéreas Brasileiras through the online travel site OneTravel (a brand of Fareportal), she expected to be able to board her flights. But Azul denied her boarding, saying the fare hadn’t been paid — even though she had paid for her tickets when she made the booking.

Are you as confused as these travelers about United’s upgrade system?

When Marco Lippman booked his United Airlines ticket for a flight from San Francisco to Frankfurt, Germany, he received a message that “four tickets were left at this price” that qualified for upgrades. But when he tried to upgrade his ticket, he found himself on a waitlist. And United’s website still contained a notation that upgraded tickets were available.

TripAdvisor advertised a cancellation policy, but the hotel won’t honor it

Adelaide Northrop’s preferred accommodation in St John, U.S. Virgin Islands, is unavailable so she books an alternative hotel through Tripadvisor that is advertised as having a zero penalty cancellation policy. When her first choice suddenly offers her a reservation, she happily confirms. The problem? Tripadvisor charges her a $911 cancellation fee.

Want a refund on your vacation rental? Then don’t do this.

When Melissa Daniels planned her family’s vacation to Florida, she found a rental on HomeAway. But when she initiated contact and requested to book the property, the management company insisted that she book directly with it instead of through HomeAway. And that’s exactly what she did.

I was charged a $14 booking fee! Is this a scam?

During an internet search for the Cedar Lodge Hotel, Michael Hughes clicked on what he thought was the hotel’s official website and booked a room. The trouble came when he needed to cancel the refundable reservation. That’s when he discovered that he had actually booked through a third-party website — one that charges a nonrefundable booking fee.

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