Follow the steps to fill out the Ska1w form accurately.

1. Click 'Get Form' button to obtain the form and open it in the editor.
2. In the 'Personal details' section, provide your billing account and phone number(s), along with your surname and first name. Ensure all information is accurate for processing.
3. Fill in your street address, including street name and number, followed by your postal code and city.
4. In the 'My bank details' section, input the name of your bank, along with the postcode and city. You need to provide your IBAN. You can find your IBAN on your bank statement or bank card.
5. Alternatively, if you do not have an IBAN, you may enter the account number instead.
6. Read the authorization statement carefully, confirming that you authorize your bank to deduct bill payments presented by Swisscom. Make sure you understand the terms regarding contesting the payment.
7. Sign and date the form at the bottom, indicating your consent to the direct debit authorization.
8. Leave the 'Authorisation' section blank; it will be completed by your bank.
9. Finally, send the completed form to your bank for processing. Until your direct debit is activated, continue to pay your bills as usual.

Complete your Ska1w form online today to ensure timely payments for your services.