Brand new iPhone. Lots of Call Time.
Why would that NOT be on your cell carrier?
Should show up on your cell activity record, as a sudden spike in the last few days.
If your cell provider shows that increase, then that's it.
If there is no noticeable increase at your cell provider, then it's your AppleID/iCloud activity.
BUT, that should be a change in data, not call time.
I think it is just a bug in the call time reporting, if your cell provider does not show equivalent activity, then do a "Reset Statistics" - it's underneath that Call Time listing.
Wait, you called Apple in Australia, and you are in New York?
Is your cell provider also in Australia?
What sort of roaming charges are you accumulating as a result of high call time?
If none - there's likely not much to be concerned at this point.
The Reset Statistics will give you a base number to go from, assuming a glitch or bug that not many have noticed, and also assuming that you have not been horribly unlucky, and got TWO iPhones that were heavily used as test phones, with lots of actual call time. Not bloody likely, eh?