A Melbourne woman had gone through a horrendous stalking ordeal prior to her death where she had to change her phone number 'almost weekly'.
New details can be revealed of how Celeste Manno, 23, had to deal with an obsessed former co-worker, months before she was found dead at her family's Mernda home about 4.10am on Monday after being attacked by an intruder.
The recent university graduate was a team leader of one of about 20 Serco call centre teams, fielding calls for Centrelink.
Her family said she showed a customer support worker 'some support' by walking him out of the building when he was sacked due to misconduct.
But from that point on, the criminology graduate was subjected to 'disgusting and vulgar' abuse from the man, particularly on social media.
Serco team leader Celeste Manno was found dead at home in Mernda, in Melbourne's north, about 4.10am on Monday
Ms Manno is seen above with her younger brother, Alessandro, 19. They were inseparable prior to her tragic death at home two days' ago
Grieving family: Ms Manno's brothers Jayden (left), Alesandro, uncle Gabriel and father Tony Manno, with her beloved baby niece Daisy, addressed the media this week
'I know at one point she was having to apparently change her phone number almost weekly,' a former colleague told Daily Mail Australia.
'It was procedure at the centre that if you lost your job, your manager would walk you out.
'She walked him out following the procedure and this is apparently what started in the infatuation because she was kind when escorting him out of the building.'
Ms Manno's brother, Alessandro, said she began to cop abuse in January with