It should be there, so that you know when it was made and how long it was. It's like this so that you know that the company isn't just saying that you made these calls and are ripping you off, in fact I think it's law that they have to tell you about them all. Hope this helps.
On our cell phones All calls are listed on the bill, and on our home phone, just the long distance calls, both incoming and outgoing are logged, with the date, time and duration of the calls.
It'll show up but I don't think your parents will realize it if its free cause my parents never realized when I did it
Do all the calls that you make come up one the phone bill? I am talking about land lines too.