Might be the wrong thread, but currently trying to change an economy classic ticket for the second time. First time everything went smoothly as expected, original ticket was ~1100 and new ticket was ~$1125 so I just paid the $25 difference and change was made. But now chatting with the Whatsapp team they told me the value of that ticket was ~$650 since that was the base fare and the rest of the ticket was taxes so a change to the new ticket (worth ~$1200) would be $550 not $75. I am quite confident this is wrong, but can't find the economy classic terms and conditions again. Anyone else have this issue before?