The woman at the centre of a sex scandal that has engulfed Seven West Media says she has been “driven to Twitter” by the media company’s lawyers.

Amber Harrison has opened a Twitter account and is posting receipts, letters and other documents she alleged were ignored by an independent review into the conduct of CEO Tim Worner, with whom she had an affair.

“The purpose of joining Twitter is to talk directly to Seven West Media board member Jeff Kennett and present the evidence,” Ms Harrison told The New Daily.

“Seven and [law firm] Allens have all this evidence I am posting – and Seven have had it since March 2015.”

Mr Kennett, director of Seven West Media, told The Australian at the weekend he was “profoundly disappointed” Ms Harrison was continuing to “defame some of Channel Seven’s employees”.

“Jeff Kennett has been vocal about his feelings about me and his board’s good governance. I want to ensure he is properly across the facts – his company set out to crush an individual with their legal might and walked away without fulfilling two contracts,” Ms Harrison said. 

Ms Harrison has levelled explosive allegations at Mr Worner over the use of illicit drugs, unauthorised credit card spending and vindictive behaviour.

“Channel Seven demands my silence under legalities of two contracts they won’t honour so instead I’ve joined twitter to chat to Jeff Kennett,” she wrote on her Twitter profile.

Amber Harrison made allegations about Tim Worner’s drug use and use of a company credit card. Photo: Twitter

The former Seven staffer has also aired claims, denied by those involved, that Mr Worner had affairs with other current and former staff members.

In a series of posts, Ms Harrison alleged she was “bullied” and “harassed” and criticised the company’s investigation into the scandal, which cleared Mr Worner last week.

The former Seven executive assistant posted pictures of documents she claimed were ignored by the investigation, including taxi receipts she alleges Mr Worner used to “arrive and leave my house” that were “expensed on [a] corporate card”.

https://twitter.com/_Amber_Harrison/status/828761302398963713

She also accused the company of waging a legal war against her.

“How come [Jeff Kennett’s Seven West Media] Board sees no need to investigate shareholder millions wasted on pointless 2 year war of law vs me?” she wrote.

https://twitter.com/_Amber_Harrison/status/828525779382267904

Ms Harrison was made redundant in November 2014, but claims she was forced out of the company over an investigation into spending on her corporate credit card.

She has also filed complaints to the Australian Stock Exchange and Australian Securities and Investments Commission, claiming Seven West Media had released “a factually incorrect statement to market” and “trading on this incorrect information”.

Mr Kennett told The Australian he was confident in the results of the investigation that cleared Mr Worner of any wrongdoing.

“The board has spent an inordinate amount of time trying to prove up the allegations made in Ms Harrison’s statement in December, and further comments she has made since,” he said.

“We have had endless meetings and employed independent forensic investigators at great cost to the shareholders, and the board stands strongly behind the statement that we put out to the ASX.”

Seven said the investigation found Mr Worner was not responsible for identifying credit card misuse by Ms Harrison, nor in the payment of a bonus to her, and there were “no irregularities in Mr Worner’s corporate credit card use”.

Ms Harrison previously said she was disappointed but not surprised by the review, which she called a “whitewash”.

“The lesson for women is don’t work for Seven West Media and expect to be treated equally or with respect,” she said in a statement.