False advertising

Booked a ticket with Just Fly under economy and to see baggage fees for the airline carrier. I went to the airline carrier and it says 1 free bag checked with economy. After getting my reservation it did not say economy and I called the airline to confirm baggage fees. The airline said the ticket was booked under light economy and I would have to pay for the checked bag. This was total false advertising. Just Fly said the only thing they can do is cancel the ticket for a $25.00 fee! The checked bag now is additional charge of $120.00 round trip. Do not book with Just Fly!