To an resolve a dispute with Delta, first contact customer service via phone,+1-(877) 350^????????????????) or ++1-(877) 350^????????????????chat, or email. If unresolved, escalate to a supervisor. Filing a complaint with the Better Business Bureau (BBB) or FTC may help resolve the matter.
How do I file a complaint with Delta? https://community.otofonix.com/forums/discussion/faqshelp-how-do-i-resolve-a-dispute-with-delta/