https://www.workingus.com/forums/topic/16-ways-to-contact-expedia%ef%b8%8f-usa-contact-numbers-a-step-by-step-guide/
https://ctl.gatech.edu/sites/default/files/webform/teaching_with_technology_partner/_sid_/six-ways-to-access-royal-caribbeantm-customer-service-by-phone-number-chat-and-email.pdf
https://ctl.gatech.edu/sites/default/files/webform/teaching_with_technology_partner/_sid_/persona-en-americanairlines-%C2%BFcomo-hablar-con-una-persona-en-american-airlines.pdf
