JDK Services continues to call my home number despite frequent and angered requests to stop!  We've only lived  here 1 month.  The day after we installed our phone line, JDK started their harassment via phone. If you receive a business card in the mail asking to call their number, DON'T CALL.  We believe this is how they get your number so they can keep calling you for "business".  Even when we ask to speak with a supervisor, they hang up on you!