service

https://www.tripadvisor.com/ShowTopic-g1-i10702-k15337383-Effective_Ways_to_Contact_Delta_Airlines_Customer_Service_Al-Air_Travel.html

service

https://dreambot.org/forums/index.php?/topic/37950-maneras-de-contactar-a-avianca-por-tel%C3%A9fono/

https://official-finnair-support-info.frappe.cloud/ways-to-reach-finnair-customer-service-by-phone-numbers-email-and-chat-options-a-step-by-step-guide

https://official-finnair-support-info.frappe.cloud/81-ways-to-communicate-finnair-customer-service-via-phone-number-email-or-chat-options-a-step-by-step-guide

https://dreambot.org/forums/index.php?/topic/37947-atenci%C3%B3n-al-cliente-avianca-c%C3%B3mo-acceder/

https://dreambot.org/forums/index.php?/topic/37936-gu%C3%ADa-para-llamar-a-latam-desde-m%C3%A9xico/

https://mforum2.cari.com.my/forum.php?mod=viewthread&tid=5431126

https://dreambot.org/forums/index.php?/topic/37933-c%C3%B3mo-contactar-a-atenci%C3%B3n-al-cliente-de-latam/