想把一个account给关了，结果paypal提示
This account cannot be closed at this time because there are outstanding
payment authorizations. Please try again after the authorizations have been
settled or voided.
我最近一次transaction是一个月前，已经complete。并且我已经把My preapproved
payments里的自动paypment全取消了。但还是出现上面的提示。
BTW，paypal真是流氓，在一些网站上买了东西后，会在My preapproved payments加入
自动payment选项，还不通知你。
