https://www.sweetprocess.com/kb/BBWBUky5a4fdpa/article/V2vNTBfVJ1M/does-qatar-give-full-refunds-live-support/

https://info-turkish-airlines-customer-portal.github.io/14-Ways-To-Connect-Turkish-Airlines-Customer-Service-By-Phone-Chat-and-Email-Options/

https://mforum2.cari.com.my/forum.php?mod=viewthread&tid=5429092

https://expedia-hlep-support.github.io/5-Ways-to-Phone-to-Expedia-by-Phone-Email-and-Chat/

https://www.sweetprocess.com/kb/wJ2Jt4y9OZSGzL/article/8GW7Crf7kjA/how-do-i-dispute-a-charge-on-expedia-live-support/

https://otx.alienvault.com/pulse/681f84121f8bf83c16f9bcb0

https://offical-china-southern-helpcenter.github.io/12-Ways-to-Get-Help-from-China-Southern-Complete-Guide-to-Phone-Chat-and-Email-Support/

https://mforum2.cari.com.my/forum.php?mod=viewthread&tid=5429063

https://expedia-hlep-support.github.io/10-Ways-to-Phone-to-Expedia-by-Phone-Email-and-Chat/

https://navatascs.com/forum/topic/11-maneras-de-contactar-con-el-servicio-de-atencion-al-cliente-de-expedia-por-telefono-correo-electronico-o-chat-guia-completa-de-ayuda-2/#postid-1287