I bought on their site attractive tickets for 2 A/R Geneva/Jakarta, 5 days before departure but with 2 stopovers. At check-in the cold shower, boarding refused because 2 stopovers in China and in this case you need a Visa... I call them urgently to find a solution (1st call: 22nd on the waiting list, after 25 minutes of patience and stress, I am told that there is no solution as it is up to the travelers to check the visa conditions). Yet when you search on the internet most of the information you find is that a French national does not need a visa to transit through China... With much more in-depth research you can realize that when there are 2 stopovers in China, the visa is obligatory). I point out to them on the phone that selling plane tickets with 2 stopovers in China 5 days before departure without taking the precaution of warning their potential customers that a Visa is mandatory is obvious theft, their answer is that they are sorry but do not give any solution! It's up to us to see with Air China.... Fortunately we came across a very competent and caring person in the Air China offices at Geneva airport who was able to take into account the amount spent and offer us the possibility of shifting our 4-day trip on departure and return with a largely affordable surplus... Otherwise we could only sit on 1900 € + the A/R costs for the airport and reservations made in Indonesia... I have been traveling for years, this was the first time I went through Gotogate and the last! A big thank you, however, to this adorable person from Air China in Geneva who did his best to find a solution even outside of his working hours!