INDIANAPOLIS (WOWO): Indiana Attorney General Greg Zoeller is calling on major phone companies to help customers block unwanted calls.

Zoeller joined 44 other state attorneys general who sent joint letters to AT&T, Sprint, Verizon, T-Mobile and CenturyLink. They say federal law does not prevent carriers from offering more comprehensive call-blocking services.

Zoeller says they've been pressing the Federal Communications Commission to order it done. He says they're hoping the FCC will do more on the issue. Zoeller says many robo-calls are generated overseas at a rate of ten-thousand calls per minute to unsuspecting people.
  
He says states need the federal government's help to put pressure on carriers. Zoeller says the services and technology already exist and customers should also pressure carriers to expand them to block unwanted calls.