To change the contact details shown on the customer invoices:
1. Go to the 'configuration' menu and choose 'my store'.
2. Select the fields you want to update and click 'edit'.
3. Enter your new contact details and click 'update'.
To change the contact info shown in the footer area and contact us page:
1. Go to the ‘tools’ menu and click 'template settings’.
2. Choose 'footer' from the left hand menu.
3. Click 'store info'
4. Edit the contact details.
5. Click 'save settings'.
