https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5322355

https://thetolkien.forum/threads/fast-contact-4-ways-to-phone-delta-airlines-customer-service-shortcuts-for-immediate-help.35005/

https://thetolkien.forum/threads/5-quick-steps-to-speak-to-a-delta-airlines-live-representative.35010/

https://audiokarma.org/forums/index.php?threads/how-to-speak-to-a-live-agent-at-jetblue-airlines-call-now-for-rapid-support.1088974/

https://audiokarma.org/forums/index.php?threads/how-to-call-to-a-live-agent-at-air-canada-airlines-representative-call-for-rapid-support.1088969/

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5322343

https://www.wattpad.com/1553838058-coinbase-account-frozen-here%27s-how-to-fix-it

https://novelight.net/character/7-easy-ways-to-get-a-live-delta-airlines-agent-on-the-line

https://thetolkien.forum/threads/united-airlines-support-6-ways-to-speak-to-a-real-human-anytime-hassle-free.35002/

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5322332