Are you entitled to a credit? Provide us with the following information.

You can find your customer number on your bill or in My BASE.

Provide the phone number on which you are available.

The IBAN number can be found on your bank card and starts with the country code (BE, NL, FR) and a sequence of characters (digits and/or numbers).

Only the following file types are allowed: jpg, jpeg, gif, png, txt, xls, bmp and pdf. The maximum size is 5 MB