Ivan „use bunq“ isn‘t very descriptive as bunq has many different features and is just the name of a bank, not of a payment method. Maybe you could describe more in detail how you plan on doing the payment.
As a general info:
Regular bank transfers (normal & instant) cannot easily be reversed. Only when the receiver of the money sends the money back. So if you receive money that way, you don‘t have to be afraid of chargebacks.
When you receive money via bunq.me or the payment request feature, there are several different payment methods for the payer to choose from. If they choose iDEAL, it‘s the same as with regular bank transfers. If they choose credit card payments, then the possibility of a chargeback exists. For Sofort, I don‘t think it can be charged back but it will take 1-2 business days before you see the money on your account. For Bancontact I don‘t know.
Hope that helped!