You can change your contact details, such as your name, phone number and e-mail address, in Oma Helen. In Oma Helen, you can also change the due date of your bill, the number of bills and the way you are billed, for example. At helen.fi, you can notify changes using the contact details change form. Please be sure to notify us of the new billing address, last name or other similar change in one of the above ways, as the changes made at the Local Register Office or Posti do not update our customer information. Log in to Oma Helen on the browser