Upvote:3
I believe your change fee is incorrect. I just looked at the YR (fuel charge/carrier surcharge/miscellaneous charge) for several economy SEA-PAR flights on AF both a few weeks into the future and today. In each case the "fuel surcharge" was $250. I don't know which class you were travelling in, but I can't believe the fare difference included an uplift of $320 for the fuel surcharge. I think you should call and check.
Edit: I see the same YR for Y, W, J and F fares both today and a few weeks in advance.
Upvote:4
The carrier surcharge (or "fuel surcharge" if you prefer) is a separate calculation to the fare line on the ticket. It goes in a different box. However, the money usually goes to the same person (unless we have codeshare flights). If carrier surcharges were banned (as they are in some jurisdictions) ticket prices would not go down, the number would be bundled differently into the total price.
It sounds like you were misinformed about the correct calculation, which makes it essentially a contractual matter and not a travel question. If you have a recording of the conversation or contemporaneous notes, you could try disputing it with the carrier or with your credit card issuer, on the basis that the price agreed in the telephone call was not the one you were charged. Your chance of success will depend on your local jurisdiction, its consumer rights attitude, and the attitude of your card company. I would not advise pursuing this course of action until your ticket is completely flown, though in some cases time limits apply for disputing erroneous charges on credit cards, often ninety days.