https://www.italki.com/en/post/0yDa5IpoXGMJSZfilgI97B

https://community.whattoexpect.com/forums/new-york-city/topic/formas-de-contactar-con-un-representante-de-atencin-al-cliente-de-delta-por-telfono-chat-y-correo-electrnico-gua-169543449.html

https://support.google.com/calendar/thread/337796396?hl=en&sjid=10091260918471845179-NC

https://community.whattoexpect.com/forums/austin-parents/topic/ways-to-reach-united-airlines-customer-service-via-phone-or-chat-options-a-stepbystep-guide-169543699.html

https://airlinessupporthub.helpkit.so/third-collection/4AJafG7fbczQworvXzEcrn/ways-virgin-atlantic-airlines-customer-service-phone-chat-and-sms-contact-methods/4Bb85LmqBSGBQ6CA5TFAv3

http://basid.alboompro.com/post/need-help-how-to-contact-klm-airlines-support-instantly

https://community.whattoexpect.com/forums/austin-parents/topic/ways-to-contact-united-airlines-customer-service-via-phone-or-chat-options-a-stepbystep-guide-169543644.html

https://airlinessupporthub.helpkit.so/third-collection/4AJafG7fbczQworvXzEcrn/ways-to-virgin-atlantic-airlines-customer-service-a-comprehensive-guide-to-phone-chat-and-agent/4Bb85LmqBTCAWhzkfMJcZ5

http://basid.alboompro.com/portfolio/travel/1478865-step-by-step-guide-to-talking-to-klm-airlines-customer-service

http://basid.alboompro.com/post/speak-to-a-real-person-at-latam-airlines-best-methods