歐洲退稅 玉山JCB 歐元換日幣再換台幣？

如題，九月下旬去了一趟歐洲 在機場退稅刷玉山的JCB（負項，即所得） 回國後看到帳單，該筆退稅歐元，先換成日幣，再換成台幣 匯率奇差無比 前一天用同一張卡刷另一筆（正項，即消費），就是歐元直接換台幣 打電話去玉山，玉山說那是退稅公司的問題，跟他們不相關 玉山說若是刷visa和master就會歐元直接換台幣了 我去查了一下global blue的網頁FAQ，是我的英文有問題嗎？local currency不就是台幣 有人也吃過這虧嗎？ http://www.globalblue.com/customer-services/tax-free-shopping/tax-free-shopping-faqs/ 4.3 I want to choose credit card as preferable refund method. In which currency will I receive my refund? Global Blue supports these credit cards – Mastercard, Visa, Diners, Amex, JCB, CUP. If you want to receive your refund to Mastercard, Visa, and Diners, your credit card will be credited in the currency, in which credit card is issued. If you want to receive your refund to JCB and CUP, your credit card account will be credited in your local currency. In case of AMEX credit card, it will be credited in British Pounds (GBP). AMEX will make conversion to the currency in which your credit card is issued. If currency of your bank account differs from the currency in which Tax Free Form is issued, the current “we sell” rates of a recognized European Retail Bank plus 3 - 5% will be implied for the currency conversion. –