To reach a live person at Delta Airlines customer service for support, you can call their 24/7 Delta Airlines Phone number hotline at 1--855→838→5875. OTA (Live Person) or 1-800-Delta Airlines 1--855→838→5875. https://nckforum.com/forum/index.php?threads/what-is-deltas-policy-on-flight-rescheduling-due-to-personal-reasons-call-1-855-838-5875-for-details.5560/