what is this strange credit source

[cat122]

i am on the telstra prepaid max $30 per month and usually have a couple of gb of data left. This month i have run out already with 2 weeks left on my acc. I checked out my usage on the my telstra app and i seen something very strange on my calls history.

[Jupiter · Accepted solution]

There's nothing unusual about that at all. That just means that you are on PrePaid and your plan has unlimited calls to Australian Landlines and Mobiles.