double charged

Hi,

this morning I was buying a Tages-Flat package, your system stated an error, so I repeated a procedure. But my order was set twice, and charged twice for the same service (7 EUR for the same day). So, i would like to have the money back on my account, since it was the systems failure. And why is it even possible to buy the same package on the same day that is valid only on that day?regardsZvonimir Kurbanovic