https://digital-marketing.elevio.help/en/articles/79-the-easiest-ways-to-contact-united-airlines-by-phone-a-detailed-guide

https://intercom.help/expedia-customer-service-help-center-b5eb9e4f6f96/el/articles/10989501-how-do-i-complain-to-expedia

travel

https://digital-marketing.elevio.help/en/articles/80-step-by-step-instructions-for-calling-united-airlines-customer-support

SERVICES

https://intercom.help/expedia-customer-service-help-center-b5eb9e4f6f96/it/articles/10989501-how-do-i-ask-a-question-at-expedia-step-by-step-guide-intercom

travel

https://intercom.help/expedia-customer-service-help-center-b5eb9e4f6f96/sv/articles/10989501-how-do-i-escalate-a-problem-with-expedia

dfd

https://www.airline-empires.com/index.php?/topic/34076-servicio-al-cliente-de-aerom%C3%A9xico-%C2%BFc%C3%B3mo-puedo-hablar-con-un-asesor-de-aerom%C3%A9xico/