请帮忙看看这个是怎么回事？

之前有人买东西从我这里，我也寄出了，但是突然收到paypal来信说要此次交易review 然后直接从帐户上把钱扣回去了:

We were recently notified that a payment you received was reversed by the buyer’s bank. A bank reversal can be requested by the bank itself or the bank account holder.

40064251386245923

We have placed a temporary hold on the funds until our inquiry is complete.

We are reviewing the bank reversal and will contact you again via email with information on what to do next. You may be asked to provide additional information about this transaction.

Sincerely,
PayPal

今天又来了一封
A payment you received has been reversed. We need more information from you. (Case ID #PP-001
We recently notified you of a bank reversal filed by larry knox for a
transaction on Aug 17, 2010. We need a bit more information from you.

有没有遇到过类似的朋友，如何应对？
谢谢

所有跟帖： 

• is it US address you shipped? -techlist- ♀ (388 bytes) () 09/08/2010 postreply 17:22:48

• 有过。钱财两空。 -192.168.100.91- ♂ (172 bytes) () 08/26/2010 postreply 13:18:24

• paypal的错? -小本生意- ♂ (0 bytes) () 08/26/2010 postreply 15:20:51

• 近来paypal发现有些accounts 被盗用, 正对可疑的部分彻查 -jck6- ♀ (0 bytes) () 08/26/2010 postreply 19:03:14

• paypal做的不够是肯定的。但CC也会有charge back -192.168.100.91- ♂ (137 bytes) () 08/26/2010 postreply 19:28:18

• Aug 17, 2010. larry knox买你的东东了? 你寄出了? -jck6- ♀ (0 bytes) () 08/26/2010 postreply 19:14:29

• larry knox?你认识这家伙吗？我现在没和买家联系。 -小本生意- ♂ (0 bytes) () 08/26/2010 postreply 22:38:17

• 看paypal给你的信! -jck6- ♀ (97 bytes) () 08/27/2010 postreply 04:25:40