[TYPO3-shop] Payment vs finalizing

[Kabina]

Hi!

When mixing credit card and ordinary bank transfer as payment options 
our customers get the opportunity to finalize before payment has been 
accepted by the credit card gateway service (in this case DIBS).

It must not be possible to click "Finalize order" before the credit card 
information have been validated and the payment accepted by the gateway 
service.

What do we do?

Thanks in advance...

FD