Why I can't buy?

Hi.
What up?I paid for your player but I got this letter:

Dear Sir/Madam,

your purchase of BS.Player PRO was rejected due to WorldPay warning.
Your money will be refunded to you in a matter of 5 days.
Please try to reorder using different credit card.

Webteh team

What's going on? :evil:
What is it "WorldPay warning"?My own card may be stolen by me or what else?
They took money and after that I got this sweety letter from Webteh.
And I don't have different credit card.