https://www.biggerpockets.com/forums/80/topics/1254516-full-list-of-expedia-customer-contact-numbers-in-usa-the-ultimate-detailed
https://www.biggerpockets.com/forums/921/topics/1254422-frontier-airlines-expert-guide-customer-service-usa-contact-numbers-expert-guide
https://forum.creative.gimkit.com/t/expedi-new-call-to-live-agent-usa-contact-numbers-complete-2025-usa-guide/169359
https://www.biggerpockets.com/forums/56/topics/1254459-quickbooks-usa-customer-service-call-now-for-payroll-desktop-and-premier-help
https://riversideca.gov/sites/default/files/webform/how-to-get-through-to-american-airlines-fast-3-8-2025.pdf
https://www.biggerpockets.com/forums/921/topics/1254411-full-list-of-united-airlines-customer-contact-numbers-in-the-usa