https://forums.serebii.net/threads/5-ways-to-directly-talk-to-delta-airlines-customer-service-via-phone-email-and-chat-a-complete-guide.781084/
https://forums.serebii.net/threads/9-ways-to-access-delta-airlines-customer-service-by-phone-email-and-chat-a-complete-guide.781082/
https://forums.serebii.net/threads/ways-to-reach-delta-airlines-customer-service-by-phone-email-and-chat-a-complete-guide.781083/
https://forums.serebii.net/threads/7-ways-to-accessing-delta-airlines-customer-service-via-phone-chat-and-email-an-fully-explained-guide.781086/
https://forums.serebii.net/threads/11-ways-to-calling-delta-airlines-customer-service-via-phone-chat-and-email-an-fully-explained-guide.781087/
https://forums.serebii.net/threads/19-ways-to-reach-delta-airlines-customer-service-via-phone-chat-and-email-an-fully-explained-guide.781088/
https://forums.serebii.net/threads/6-ways-to-hold-delta-airlines-customer-support-via-phone-chat-and-email-an-fully-explained-guide.781089/
https://forums.serebii.net/threads/14-ways-to-call-delta-airlines-customer-support-via-phone-chat-and-email-an-fully-explained-guide.781090/