Hi @Anonymous User
Go to My Bills & Payments on your NOW Broadband online account.
Then either select recent Broadband & Calls payment or previous 12 months payments.
When you click on the Broadband Bill summary it should show further information,then to expand the screen information further click the green drop down arrow below the Calls Useage then normally there should be a small green link button to click on saying something like "View Calls"
If you are trying to look at a phone call breakdown for the last couple of weeks between the last recent payment and the next up & coming payment then i believe the NOW system won't be able to show it from memory and you have to wait until the bill is paid and moved into the recent payment section on screen of your Bills & Payments section of your account.