https://nch.invisionzone.com/topic/89146-11-ways-to-reach-aegean-airlines-customer-support-faster-than-ever-before/
https://www.jeffbullas.com/thread/top-5-proven-techniques-to-connect-with-a-live-american-airlines-agent/
https://www.jeffbullas.com/thread/ways-to-reach-how-can-i-talk-to-someone-at-southwest-customer-service/
https://www.supramania.com/threads/como-llamar-a-latam-en-mexico-52-800-953-0855-latam-en-mexico.337231/
https://writers.coverfly.com/projects/view/7b21905d-f56f-40c8-8c55-3f587ff57356/Desde_EstadosComo_llamar_a_expedia_desde_Estados_Unidos_en_espanol