Hi there 🙌,
any direct debit approved for a merchant will go through.
Any payment request from a merchant you have not set for auto accept will be executed only if you tap on ACCEPT.
Make sure for the merchant you refer to, the Auto Accept is not set up.
get to your sub account, tap on the setting wheel top right, scroll the list dow to "Auto Accepted Payments".
More info here:
https://together.bunq.com/d/18035-how-do-i-close-my-bunq-account
Have a good one 🌈
Regards
GG