So they send me a message that the second half of my MCO-CLE-MCO will leave 6 hours later and request that I “confirm” the change. I go in on a second browser and find that the first half is no longer running on Thursday’s. So that leg is gone entirely. But they never told me about that little issue. My original booking is still there.

when I click on “cancel options” in their message, it says that there are no “self service” options.

This is one of my last three flights that I booked on spec and to burn my miles while I was still a 100K.

the OP ends the post with “any recourse?” Increasingly, I see the only recourse as never booking a Frontier flight.