A former Canberra call centre worker will spend two months in jail after she scammed $12,000 from ActewAGL customer accounts.

In the ACT Magistrates Court, Jessica Kate Anderson, 29, pleaded guilty to nine charges including obtain property by deception, attempt to obtain property by deception and intentionally provide false information.

The court heard Anderson used a variety of methods to funnel the money into accounts controlled by her, including refunding credit from clients' accounts into her own.

She also called the ActewAGL call centre, where she worked, pretending to be other clients and asking for refunds be sent to her accounts.

Anderson attempted to have money transferred to a third account using a colleague's details.

The court heard the offending occurred between April and June last year.

In a previous court appearance, it was revealed Anderson used her work email to discuss the scam.

Anderson's lawyer told the court her client had problems with alcohol and was in a bad place at the time of the offending.

She said she had since taken steps to deal with her alcohol abuse and mental health concerns.

The prosecution argued Anderson's actions would have gone undetected if not for the scrutiny of management.

Some customers contacted ActewAGL with concerns about their accounts and internal investigations were launched.

The court was told Anderson had a grievance toward ActewAGL and it was not until she spent 17 days in custody that she became concerned about the consequences of her actions.

Magistrate Glenn Theakston sentenced Anderson to eight months' jail but set a release date in two months.

She also received a two month suspended sentence for breaching anti-money laundering laws.