The only alternative left requires mass participation and cooperation. Take the call, find out what company is trying to sell what item, spread the word and boycott them. If they are near you, track down contact numbers for their executives and bombard them with 3 AM calls, or picket their homes or offices...get creative.
But the call/picket time could better be spent ridding ourselves of this freedom-endangering regime, instead of a mere annoyance.
My favorite was to call their 800 number from every phone in a bank of pay phones. It cost me nothing other than time and it cost them real money to answer each call because of the pay phone surcharge. Now just try to find a single pay phone, much less a bank of them.