https://www.siliconvalley.com/2024/10/21/travel-troubleshooter-a-flight-confirmation-from-frontier-airlines-never-arrives/

DEAR TRAVEL TROUBLESHOOTER: I booked a roundtrip flight from Dallas to Denver on Frontier Airlines recently. Frontier charged my wife’s credit card $583 on the same day. I never received a confirmation email. Frontier does not have a way to call anyone — there’s no customer service phone number — so I emailed the airline. I received a message from a reservations specialist the next day, who asked for my flight details. I provided them, but never heard from her again.

I continued emailing her but never received a response from her or Frontier Airlines. I found a phone number that I thought was for Frontier, but when I called it, they put me on hold for 15 minutes. A person came back on the line and said they were in the “queue” with Frontier and needed my full credit card number because they “knew Frontier would need that information.” This is when I knew it was a scam, and I hung up.