https://www.wyomilitary.wyo.gov/wp-content/uploads/formidable/14/e-x-p-e-dia-usa-customer-service-full-step-by-step-guide.pdf

https://education.aaaai.org/sites/default/files/webform/complete-list-of-official-expedia-customer-contact-numbers-in-the-usa-the-ultimate-detailed-guide.pdf

https://www.lakegeorge.com/event/talk-to-a-live-agent-at-delta-air-lines-usa-detailed-effortless-2025-customer-support-guide-268087/

https://www.thefreshloaf.com/node/77309/16-ways-talk-live-united-airlinesr-agent-step-step-help

https://travelguideflyer.zohodesk.com/portal/en/kb/articles/faqs-live-how-do-i-connect-with-someone-on-singapore-airlines

https://educativ.net/forums/topic/41179-21~-detailed-list-of-quickbooks-customer-contact-care-numbers-in-the-usa/

https://officialcustomerservicehelpdesk.zohodesk.com/portal/en/kb/articles/faq-what-is-the-delta-cancellation-policy-what-you-need-to-know

https://intercom.help/namecorrection-e5c253/en/articles/12088275-step-guide-change-wrong-name-on-jetblue-airlines-ticket-easily

https://intercom.help/namecorrection-e5c253/en/articles/12088256-simple-guide-how-to-change-my-name-on-jetblue-airlines-full-support

http://www.trailforums.com/t/talk-full-list-of-official-booking-com-customer-service-contact-numbers-in-usa-the-ultimate-official-guide/15703