Refund. Route ATH-BCN date 2/10/21. Flight V8103. Alteration of flight time by more than 5 hours entitled me to a refund. Vueling claimed it could not refund via the card used to purchase the flight; they supplied a link to Chatbot Banking to receive my bank details. The chatbot banking service doesn't not work? Tried to use the link to supply my details for refund, on six occasions; all I get is "Sorry, there was a problem and we were not able to process your request. Please try again later." Please give me an alternative means to get my refund. Nicholas Fairclough, Cheshire, England.