Non-existent customer service; they ghost you after cancelling flights
As long as your flight does not get disrupted (and you don't expect too much of the quality of services or comfort of the cabin) you are fine. But once there's any disruptions, as there nowadays tend to be quite a lot, you are screwed. They have non-existent customer service; they don't have any contact information on their website whatsoever. They only have an AI chatbot that does not understand your requests, 98% of the time tells you that their human agents are not available, and if it rarely tells you that a "human agent" has joined the chat, nobody actually joins the chat and then you don't get any answers from the chat anymore. When you create a "case" for your inquiry, they tell you that they'll get back to you in 48 hours. It's been almost a month since I filed my request for a simple document request (where they would confirm when and why my flight was cancelled) and they still haven't resolved it. It's impossible to deal with them to get refunded for flight disruptions or just to get some information for insurance, because they simply refuse to answer any requests. You just can't reach customer service in any way.