THE WORST AIRLINE I'VE EVER DEALT WITH. I have sent 6 emails to date, no reply, gone in circles with their automated phoneline which intentionally does not put you through to a human (instead either mucks you about or hangs up on you) and have now been left with the only option of lodging any complaint I can to get a response. My flight to Barcelona from London was cancelled at the airport. I was told I could claim compensation but had to do it online. Submitted the form (after much difficulty; funnily enough, the booking ID you need to complete the form doesn't work, even though I had the number checked by Vueling staff at the airport - coincidence? I think not. Their entire operation is constructed in a way to frustrate you so that you just give up and don't both calling, seeking compensation etc.). Finally managed to submit the request and within 5 minutes received an automated email saying it was denied - to quote: "After analyzing your case we inform you that according to the information registered in our databases your flight was affected by circumstances beyond the company’s control. We regret to inform you that, in accordance with EC Regulation 261/2004, you are not entitled to compensation. Some factors -such as adverse weather conditions, strikes, diversions, bird strikes, runway closures, etc.- are completely beyond the company’s control. In consequence, we regret to inform you that, according to the Community Passenger Protection Regulations, your case does not correspond any type of economic compensation." I immediately responded and asked for more information, namely, the specific factor that was outside of Vueling's control, which led to the cancelation, and which meant I was not entitled to compensation. I have followed this email up 3 times over the past week, again with zero response, recognition or reply. I am disgusted by the treatment of this airline. If Vueling are going to maintain their position that I am not entitled to compensation, despite the fact that I meet ALL of the requirements provided in their fact sheet supplied to me at the airport, I demand and am entitled to further information as to how they have made this determination. Their current approach to customer service is unethical, immoral and quite possibly, illegal, as they've failed to provide any evidence to support their determination that the alleged exception they rely upon (EC Regulation 261/2004) even applies in this matter. Not to mention, they've also outright refused to refund my return ticket from Barcelona to London, which again is just wrong on so many levels. 6 emails to date, numerous hours wasted trying to get through to Vueling, an instagram message sent directly to their account, and the response I get is total silence and ignorance, as if we just don't exist. I am appalled. How is this airline even functioning. Will NEVER BOOKVUELING AGAIN. Trust me when I say no cheap flight is worth the headache this airline puts you through. Use another budget airline.