Are your sure it was incorrect? I found the screen confusing but upon adding it up it came out right. If you were charged more than showed on the screen when you checked out I think you are due a refund. It is a violation of the Dot Rules on fares
Under the new requirements, all mandatory taxes and fees must be included together in the advertised fare. The advertising provision takes effect Jan. 26, 2012 while all of the other consumer protections go into effect on Jan. 24 of this year. - See more at:
http://www.dot.gov/affairs/2012/dot0....qy0qNnXj.dpuf