http://pressbooks.pub/traveltask/part/how-to-contact-turkish-airlines-customer-service-phone-email-and-chat/
https://pressbooks.pub/traveltask/part/how-to-contact-turkish-airlines-customer-service-phone-email-and-chat/
https://pressbooks.pub/traveltask/chapter/how-to-get-in-touch-with-turkish-airlines-call-chat-and-email-options/
https://pressbooks.pub/traveltask/chapter/how-to-speak-with-turkish-airlines-customer-service-phone-email-and-chat-full-contact-guide/
https://pressbooks.pub/traveltask/chapter/ways-to-contact-turkish-airlines-customer-service-phone-email-and-chat-without-frustration/