https://acfl.net/forums/topic/11-maneras-de-contactar-con-el-servicio-al-cliente-de-expedia-por-telefono/
https://caddo.gov/wp-content/uploads/ninja-forms/11/12-quick-ways-to-ask-questions-to-ethiopian-airlines-support-via-phone-email-or-chat-options-a-step-by-step-comprehensive-guide.pdf
https://acfl.net/forums/topic/11-maneras-de-contactar-con-el-servicio-al-cliente-de-spirit-airlines-2/
https://usa.life/read-blog/166686_21-ways-to-contact-how-can-i-speak-to-someone-at-tap-air-portugal-a-comprehensiv.html
https://acfl.net/forums/topic/contactar-con-un-representante-de-atencion-al-cliente-de-lufthnsa-airlines/