https://forums.serebii.net/threads/formas-de-contactar-con-un-representante-de-atenci%C3%B3n-al-cliente-de-expedia-por-tel%C3%A9fono-chat-y-correo-electr%C3%B3nico-gu%C3%ADa-paso-a-paso.786937/
https://info-official-united-airlines-guide.github.io/us-en-customer-support-contact-us-4-Ways-to-Contact-United-Airlines-Customer-Service-Using-Call/
https://forums.serebii.net/threads/formas-de-contactar-con-un-representante-de-atenci%C3%B3n-al-cliente-de-expedia-por-tel%C3%A9fono-chat-y-correo-electr%C3%B3nico-gu%C3%ADa-paso-a-paso.786935/