https://otc.education.tamu.edu/wp-content/uploads/formidable/3/12-easy-ways-to-get-in-touch-with-quickbooks-payroll-support-team.pdf

https://discourse.myriadrf.org/t/expedia-customers-usa-contact-numbers-a-complete-support-guide/11639

https://insomniacoach.com/forums/topic/complete-list-of-lufthansa-airlines-customer-contact-numbers-in-the-usa/

https://otc.education.tamu.edu/wp-content/uploads/formidable/3/Delta-Airlines%C2%AE%EF%B8%8F-Customer%C2%AE%EF%B8%8F-USA-contact-Numbers-A-Step-By-Step-Guide.pdf

https://discourse.myriadrf.org/t/talk-to-a-live-person-at-american-airlines-full-step-by-step-guide/11453

https://paperswithcode.com/method/faqs-singapore-how-do-i-get-a-response-from

https://obsproject.com/forum/threads/american-airlines-customer-service%E2%84%A2%EF%B8%8F-usa-contact-numbers-a-complete-2025-guide.187834/

travel

https://otc.education.tamu.edu/wp-content/uploads/formidable/3/United-Airlines%C2%AE%EF%B8%8F-Customer%C2%AE%EF%B8%8F-USA-contact-Numbers-A-Step-By-Step-Guide.pdf

https://sharefolks.com/public/index.php/view/united-airlines-customer-service-number