I have pressed 9 as suggested to 'stop calls' and yet the calls keep coming twice a week or so. This is the second time I have reported this number. They are selling a "personal medical alert" system. Additionally, pressing 1 to purchase a PMA system terminates the call.
Contact the FCC at fcc.gov and select unwanted telemarketer calls and follow the directions from there. The more complaints they receive the better chance of catching them.