https://nch.invisionzone.com/topic/90920-livehow-do-i-speak-to-someone-at-expedi%F0%9D%93%AA-your-complete-guide/
https://www.zero88.com/forum/topic/12538-the-complete~20-ways-to-contact-united-airlines-customer-support/
https://regions-and-cities.europa.eu/sites/default/files/webform/multimedia_center/_sid_/How-do-I-complain-to-Expedia-Customer-Service.pdf
https://www.zero88.com/forum/topic/12707-10-easy-steps-to-get-in-touch-with-united-airlines-customer-service-%E2%80%93-full-guide/
https://regions-and-cities.europa.eu/sites/default/files/webform/multimedia_center/_sid_/Como-puedo-llamar-a-Aeromexico-en-M%C3%A9xico.pdf
https://regions-and-cities.europa.eu/sites/default/files/webform/multimedia_center/_sid_/ghadekaaund.pdf
https://nch.invisionzone.com/topic/91342-9-ways-to-beat-the-hold-music-and-talk-to-expedia%C2%AE%EF%B8%8F-sooner/
https://regions-and-cities.europa.eu/sites/default/files/webform/multimedia_center/_sid_/Cual-es-el-numero-de-telefono-de-Volaris-Mexico.pdf