充值 Digital Ocean，但总是被退款怎么解决？

这个月通过农行借记卡和Paypal给Digital Ocean充过三次钱，可是每次充值成功后钱又都被退回卡里，然后我的Digital Ocean账号就被锁了，有人遇到过相似的问题吗？昨天给Digital Ocean发Ticket，他们让我找Paypal：
Before we can unlock your account I recommend you to contact Paypal support to find out furthermore about the payment reversals. Once they can confirm that should try again we'll be happy to unlock your account. Let us know once you have received a clearance from Paypal.
不知道有没有人遇到过同样的退款问题，求指教。