https://gamingcontrolboard.pa.gov/sites/default/files/webform/patron_dispute_complaint_form/_sid_/10-ways-to-dial-travelocity-customer-service-via-phone-number-chat-and-email-options.pdf
https://www.scienceforums.com/topic/97023-2-nine-ways-to-talk-to-live-agent-at-united-airlines-via-phone-email-chat-a-step-by-step-guide/
https://www.scienceforums.com/topic/96402-qatar-airways-customer%C2%AE%EF%B8%8F-usa-contact-numbers-support-instantly/
https://regions-and-cities.europa.eu/sites/default/files/webform/multimedia_center/_sid_/delta-en-espanol-%C2%BFcomo-hablar-con-un-representante-de-delta-en-espanol.pdf
https://www.scienceforums.com/topic/97020-55-ways-to-call-to-live-agent-at-united-airlines-via-phone-email-or-chat-a-step-by-step-guide/
