https://nch.invisionzone.com/topic/89584-ultimate-guide-5-ways-to-get-a-live-person-at-delta%E2%84%A2%EF%B8%8F-airlines%C2%AE%EF%B8%8F/
https://nch.invisionzone.com/topic/89513-7-quick-ways-to-contact-singapore-airlines-customer-support-phone-chat-and-email/
https://www.jeffbullas.com/thread/15-ways-to-speak-to-someone-at-emirates%ef%b8%8f-a-stepbystep-guide/