The Seven Network's treatment of its female staff is again under fire after the dismissal of a cadet soon after she made a complaint of sexual harassment about an older male reporter.

Amy Taeuber, a 27-year-old cadet journalist in Adelaide, complained about the colleague making disparaging remarks about her marital status and calling her a lesbian.

But Ms Taeuber was suspended after the TV network claimed she had bullied a fellow cadet, presenting her with a series of written allegations during a meeting with Seven's human resources department, the ABC's 7.30 reported on Monday.

An audio recording of the meeting features a shocked Ms Taeuber being told her phone and Seven identity pass would be confiscated, that she was suspended from duty immediately and she could not log out of her computer.