You didn't answer KVS's question. Was it prepaid? If not, then I am afraid you got caught up in the dynamic currency conversion. I am sure to read everything I sign these days - hotel check-in forms, rental car contracts, etc. Yes, it takes an extra minute or two but that is time well spent when it saves $15-$20 each time or more. I am afraid that "dynamic currency conversion" is final and can not be reversed, at least that is what most companies make you sign. Normally there is an "opt out" box on the form you sign to opt out of this "feature."