We recommend you understand why it was refused, normally by talking to the debtor. It can be strong customer dissatisfaction, and error or fraud. Depending on the cause, the action to take. SlimPay solution can then retry or change of payment methods.
Depending on the reason , (1) you may represent the payment with the same payment method (2) contact the customer to ask another form of payment or (3) you can follow your normal collect process. SlimPay has a feature that has automated (1) & (2).