Spirit Airlines Representative made a mistake, cancelled my reservation, BUT KEPT MY MONEY Nationwide

I created a round trip flight between denver and las vegas.  I needed to fly home earlier than originally intended.  The spirit airlines representative made a mistake that resulted in my reservation being cancelled.

They refused to give me a refund, refused to issue me the flight, refused to do anything at all other than tell me to rebook the flight and pay yet another charge for the flight.

They essentially stole the money.  They took money to render a specific service, refused to render that service, refused to issue any sort of refund, kept the money.

Yes, they have very cheap flights ... but it isn't even remotely worth it if they take money and don't give you the flight you ordered.

This makes them a scam by the very definition.