Getting one to two calls a day from these tools.  Never signed up or even heard of FFFF until I started getting these unwanted calls.  They usually call around 930am.  I try to have the most annoying music possible that drops the most swear words playing.  When they call, I answer, turn up the music and let them listen.  They usually hang up quickly.  Never would I buy something from these asshats after having to deal with this telemarketing hell.