收到 amazon的回信. 他說, replacement已經寄出了, 沒有辦法取消.
退回 replacement的郵資太貴, 就請你保留下這replacement吧.
或許, 你也可以將這些東西捐贈給學校或圖書館.

收到這回信, 怪不好意思的.

============================
Dear Reed,

Greetings from Amazon.ca.

Thanks for letting us know that you have now received the original
shipment. Unfortunately, we cannot cancel the replacement order as
it has already shipped from the fulfillment centre.

As the cost of return shipping is prohibitively expensive in this
case, we ask that you keep the duplicate order with our compliments.
Perhaps you can donate it to a school or library in your area.

Thank you for shopping at Amazon.ca, and we hope to see you again
soon.


Best regards,

Cy E.
Amazon.ca Customer Service
http://www.amazon.ca