用信用卡定房事遇到的问题

大家好!在网上定房遇到不知何解的问题,本人用国际信用卡在罗马定了10天的房间然后再到网上定巴黎7天的房间,结果显示一下信息:"Whilst processing your credit card the bank returned the following error:-

Declined. Sorry this transaction has been declined by your card issuer. No further information was passed to WorldPay as part of your confidentiality agreement with your card issuer. You may wish to try another card."

何解啊?是不是余额不足?还是其他情况?