https://amtrakoig.gov/sites/default/files/webform/foia_form/_sid_/live-agent-contact-to-someone-at-united-airlines-usa-support-verified-2025-contact-directory.pdf

https://forum.mova-tech.com/forum.php?mod=viewthread&tid=3727

https://tourismbharat.com/travel-forum/topic/talk-to-someone-at-expedi%F0%9D%93%AA-usa-contact-numbers-in-detail-2025-guide/

https://amtrakoig.gov/sites/default/files/webform/foia_form/_sid_/12-ways-to-call-american-usa-contact-numbers-complete-2025-guide.pdf

https://forum.mova-tech.com/forum.php?mod=viewthread&tid=3724

travel

https://amtrakoig.gov/sites/default/files/webform/foia_form/_sid_/United-Customer-Service-Number-united-Help-Desk-Contacts.pdf

travel

https://tourismbharat.com/wp-content/uploads/2025/08/fast-expedia-customer-service-usa-contact-numbers-the-complete-2025-expert-guide.pdf

https://www.hoatalk.com/Portals/0/NTForums_Attach/18523089254.pdf