https://www.scienceforums.com/topic/97249-6-ways-to-reach-to-frontier-phone-email-and-chat-a-sequential-guide/

https://www.scienceforums.com/topic/95490-15-ways-to-connect-to-royal-caribbean-cancellation-by-phone-number-chat/

https://portaly.cc/american-airlines-care

https://www.scienceforums.com/topic/97274-snappy10-ways-how-to-talk-to-live-agent-at-united%C2%AE-%E2%80%93-step-by-step-instructions/

https://www.scienceforums.com/topic/97241-4-ways-to-speak-to-someone-at-frontier-airlines-phone-email-and-chat-the-essential-guide/

https://www.scienceforums.com/topic/97272-breakneck12-ways-to-get-through-to-a-live-agent-at-united-%E2%80%93-phone-email-chat-guide/

https://www.scienceforums.com/topic/97227-9-ways-to-get-live-human-on-frontier-airlines-phone-email-and-chat-a-detailed-airlines-guide/

Travel

https://www.goodreads.com/quotes/13079548-if-you-need-to-escalate-an-issue-with-lufthansa-1-87

https://sites.google.com/view/puedo-llamar-a-spirit-airline/home