In a class-action lawsuit, filed on Wednesday, a former Twitter employee, who has been laid off by the company more than 500 times since Musk became CEO, claimed that Twitter failed to pay severance payments of at least $500,000,000 to its former staff.

The lawsuit filed by the large group in June sought damages of up to $25 million. They claimed that users were posting audio clips and video clips which contained copyrighted material.

Twitter parent company, X Corp, sued the law firm Wachtell, Lipton, Rosen & Katz—hired by the platform’s former management—earlier this month for a $90 million payment that Twitter argued should be paid back, according to a filing.

A December lawsuit from a private jet company alleged Twitter refused to pay $197,725 for a flight that transported the company’s former chief marketing officer Leslie Berland—a claim attorneys for Twitter countered, asserting the executive was overcharged for the round trip used to meet with Musk when he was settling into the company.

Twitter is also being accused in a class-action suit filed at the beginning of July that it has refused to deal with 891 cases submitted by ex-staffers.

Unpaid office fees have also reportedly become a problem for Twitter, which was sued by an Australian infrastructure company last week, which accused it of failing to pay more than $600,000 in infrastructure work bills for offices in multiple countries—the sixth office-related lawsuit Twitter has faced since Musk’s takeover.

Following the launch of Meta’s rival app, Threads, Twitter threatened to sue Meta over the “copycat” app, claiming it misused Twitter’s “trade secrets and other intellectual property” and poached former Twitter staffers to do so.