The Twitter service is being sued by a woman who says it was unfair and deceptive for its staff to make false and defamatory statements about her after she was diagnosed with Stage 4 breast cancer.

Twitter has also been ordered to pay her $3.5 million in damages for her experience and suffering.

The woman, whose identity has not been disclosed, filed a lawsuit in California last month alleging the service violated the federal Fair Housing Act by failing to warn her about her disease.

“The false statements were made because Twitter was concerned that a woman with breast cancer might be offended by their representations that they would do all in their power to protect her,” the suit states.

“It is clear that Twitter did not make this warning.

Instead, they simply continued to falsely characterize the woman as a child molester and a child murderer.”

Twitter’s chief executive officer, Dick Costolo, has defended the service, saying it has had a “long history of fostering a safe, welcoming and supportive environment for people with cancer.”

But the lawsuit claims that the company has not done enough to stop the false and offensive comments.

It adds: “Twitter’s false statements, both on Twitter itself and in its communications with the press, were intended to cause the Plaintiff great distress, including that she could not return to Twitter.

This is a serious and pervasive violation of her right to free expression and free association under the First Amendment.”

Twitter said the matter was under investigation.

The company declined to comment.