A payment that was declined or left unfinished
If the card is declined, the booking does not close and nothing is charged. The screen shows the reason as the clearing company gave it, and you can try again — with the same card or another one.
If you left the payment screen halfway through, or the app closed, go back to the booking. We check with the clearing company what actually happened rather than trusting what the screen showed. If the payment went through, the booking closes by itself, and while we check there is no need to pay again — you will not be charged twice.
If you were charged and the booking did not close — rare, for instance when the charge completed only after the rental period had already ended — the money comes back to you in full. The credit is recorded here and carried out at the clearing company, so it is not instant: it will appear on the card within a few business days.