Amazon and ebay have some great blockers...telephones that block are Ok..but they only have 50 number max capacity..that is not enough when dealing with these douche-bags...the one I have has 1500 number blocking capacity and cost around 60 bucks.
If you get a call from this telemarketer, please file a complaint with the FCC and FTC: http://www.fcc.gov/complaints and https://complaints.donotcall.gov/complaint/complaintcheck.aspx. If they receive enough complaints, they'll investigate. In addition, they send information on how to file a lawsuit. Information on their website says they have shut down five of these scams.