If you contacted the Kolleno support team to activate BACS Direct Debit to work with your Stripe integration, you will want to know when the Direct Debit payments are triggered.
Although Direct Debit payments usually takes 3 working days to be processed (it needs several days of advance warning to the corresponding bank), Stripe does not allow to set a date in advance for the payment.
Therefore, consider this scenario:
The invoice is due on Monday 10th February
Kolleno will automatically trigger Stripe on 10th February to take the money from the customer's bank account
Stripe will get you the money on Thursday 13th February.
If you were to use the GoCardless integration instead, the payment would get triggered on Wednesday 5th February (3 working days before the due date) and you would get the money on the Monday 10th February.