Click on follow a package on the Colissimo website (La Poste group).
Enter your 13-character tracking number, starting with "7R" on your proof of deposit and under the barcode of your return label.
If the follow-up Colissimo indicates "Your package is delivered: Hardloop Montmelian", this means that your package has been received in our warehouse and that your refund will be made within 7 days.