My balance was deducted by more than 20%!

[pixellabel]

I have completed an order of $80 and the question is why I only received $57.60? Shouldn't it be $64?
I didn't have a bill before.

I have contacted Customer Support but have not received any good response.

Can anyone explain?
Thanks.

[milos_siena]

You can look at your ticket now - it seems that it has been explained in details.

[milos_siena]

I will forward this to the relevant team.