With some banks, your withdrawal is displayed as a negative reservation on their bank statement. One of the banks where this happens is ING. This is a known issue for these banks, but can be a little bit confusing for you. 

Don’t worry, the negative reservation will only remain a reservation and will not be processed. You will see a separate transaction which shows the correct booking on your Credit Card when the booking is processed.

If you have any further questions in regards to this, please feel free to contact us via email at BUX Support.