楼主可能没仔细看,刚刚看到BB发来的email:
However, there is good news to share: we understand you intended to order the pair and were billed for the actual price of the pair, so we ask that you order another speaker on our site and we are going to send you the additional speaker at no extra charge.
那$20的coupon是给你下次shopping时用的。且只能是online。