Any call record available when using TMobile phone cards only?

If someone is using a TMobile phone, and only buying phone cards to make calls, are any records kept of the calls being made?





I know the phone has a call log feature on it, but what about a record with the company or something like that?





Thank for any help : )

Any call record available when using TMobile phone cards only?
The company should have some sort of record of calls since they are recorded on the tower the call is made from