The FTC has launched a campaign called “Operation Call it Quits” to reduce unsolicited & illegal robo-call activities:

The crackdown is called “Operation Call it Quits” and it has resulted in 94 actions, four new cases, and three new settlements by the FTC. In total, this accounts for operations that placed over one billion pre-recorded telemarketing calls pushing everything from credit card interest rate reduction to medical alert systems.  The scope of the action taken is huge, with 25 federal, state, and local agencies involved and a further 87 enforcement actions carried out.  So far, the FTC has brought cases against 145 violators and looks set to continue chasing them down as well as helping consumers to protect themselves by offering advice on how to deal with unwanted calls through the website.