https://www.siliconvalley.com/2024/12/23/travel-troubleshooter-klm-owes-money-for-a-refundable-flight-so-wheres-the-refund/

DEAR TRAVEL TROUBLESHOOTER: I am writing because I hope that someone at KLM will help me with a refund for a “flex” flight I purchased this summer. This email comes from a place of desperation, as I’ve had a terrible time trying to contact KLM and getting any information regarding my refund.

Last year, I booked three round-trip, “flex” refundable tickets from Washington, D.C., to Amsterdam on KLM.com. I paid $4,907 for the tickets. In April, I had to cancel the trip, so I went to KLM.com and initiated a cancellation.