the final Frontier

Stardate 4/22/2024 : I booked the cheapest flight, via Frontier, but forgot to read the
(awful) reviews. Expedia has a rule if you make a reservation you can refund free of charge within 24 hours but I called them and they make you refund through Frontier. Which does not even have a customer refund/complaint phone number. Not quite delivering what they promise on the part of Expedia.
So the Frontier scam goes like this: you get to the airport and if your backpack doesn't fit into the 8x18x14 inch "sizer"(at the GATE) you have to pay 99 bucks. No middle ground or fifty shades of grey. They want a Benjamin. Pronto. Or no bordo.
So looks like tomorrow I will be wearing four sets of shirts under my flannel shirt. And stuffing socks and various items into my pockets (is that a banana, sir?) so that my backpack will be more floppy and fit into the sizer. Maybe even my laptop under my shirt (make that shirts) if I am feeling brave.
Has anyone been through this Frontier hassle before? Turns out the gate agents receive 10 dollars every time they can net another sucker with baggage that won't fit. And consequently a 100 M class action suit is going on since November, but the practice still goes on...whatever happened to cease-and-desist?
Update: looks like if you take a photo of your luggage fitting into the sizer you can successfully do a chargeback on this scam.
https://www.reddit.com/r/Flights/comments/133bh0h/frontier_baggage_scam/