https://www.historypin.org/en/priceline-r-customer-service-r-usa-contact-nu/

https://sulasula.net/forums/topic/virgin-atlantic-airways-receives-warning-from-expert-for-customer-help/

https://froodl.com/all-priceline----contact-numbers-for-customer--support--updated-

https://forum.schueleraustausch.de/t/full-list-of-official-hainan-airlines-customer-contact-numbers-a-ultimate-step-by-step-guide/33897

https://about.me/officiallistofexpediausa

https://about.me/fulllistofexpedia

https://about.me/officialexpediausacontact

https://about.me/alllistofvirginatlantic

https://about.me/gethelpfromvirginatlantic

https://about.me/listofbritishairwayscontact