https://airlinescom.zohodesk.com/portal/en/kb/articles/how-do-i-contact-lufthansa-customer-care-8-7-2025-2

https://www.cmedia.com.tw/forum/topic/2171

https://www.cmedia.com.tw/forum/topic/2174

https://www.rcindia.org/rc-general-topics/elevenone-ltlt-ways-to-contact-how-do-i-talk-to-someone-at-american-guide/new/#new

https://forum.mygolfspy.com/topic/72361-%E2%98%85seven-ways-to-contact-how-do-i-talk-to-someone-at-delta%C2%AE-a-comprehensive-guide/

https://www.rcindia.org/rc-general-topics/quickbooks-desktop-support-u-s-contact-numbers-a-complete-guide-2025-41066

Travel

https://www.cmedia.com.tw/forum/topic/2156

https://www.rcindia.org/rc-general-topics/contact-to-someone-at-american-airlines-82-70-talk-to-agent-anytime/new/#new

https://www.martview-forum.com/dev/index.php?threads/42707/