When you have started the deposit process but did not finish the actual deposit (clicked away the Bunq payment screen for example), your deposit will show up in the transaction history as "pending".
This is because we are waiting for you to complete the deposit; we cannot know that you stopped that process.
After a while (couple of days) the pending deposits that have not been completed will automatically be removed from your transaction history.
Note: SEPA (banktransfers) deposits never show up as 'pending deposit' in your transaction history. This is because we never know if you actually sent the money. When your payment is received by us, it will be credited to your account immediately and it will show as 'completed deposit' in your transaction history.