While AT&T refuses to release details about plans for its $20 billion in tax savings, a report by the Communications Workers of America (CWA) examines the telecom giant’s continued role in hollowing out the middle class by eliminating thousands of jobs, closing call centers, and shifting customer service and network maintenance to low-wage contractors, including overseas vendors.

Workers at five federal contract call centers operated by General Dynamics Information Technology (GDIT) filed new wage theft complaints with the U.S. Department of Labor’s Wage and Hour Division. Since January, over 2,000 current and former GDIT call center workers have come forward to call on the Department of Labor (DOL) to investigate violations of prevailing wage law at the company.