First, check the transaction status
Go to the Activity tab to see whether your payment is still being processed or has already been finalized by the operator (Senelec, Sen'Eau, telecom operator).
If the transaction is still in progress
Contact Kodo support immediately: the faster you report the error, the better the chances of catching it before the operator processes it.
If the transaction is already finalized
Once an operator has processed a payment to a given number or meter, the operation generally can no longer be canceled remotely. This is a constraint of the operator's network, not Kodo's. Still contact our support: depending on the service and the timing, a solution can sometimes be found directly with the operator.
The best habit: before confirming a payment, always carefully check the number shown on screen. Kodo always displays the entered identifier before confirmation.