https://community.weddingwire.ca/forums/expedia-customer-support-usa-phone-list-general-guide-to-all-contacts–t66006

https://teachers.io/unitedairlinescustomer/blog/2025/8/24/united-airlines-customer-usa-contact-numbers-your-complete-help-desk-resource-here

https://w.atwiki.jp/airlinesallguide/pages/10.html

https://w.atwiki.jp/customerhelpline/pages/37.html

https://w.atwiki.jp/customerhelpline/pages/36.html

https://w.atwiki.jp/customerhelpline/pages/35.html

https://w.atwiki.jp/customerhelpline/pages/34.html

https://w.atwiki.jp/customerhelpline/pages/33.html

https://w.atwiki.jp/customerhelpline/pages/32.html

https://w.atwiki.jp/customerhelpline/pages/31.html