Keep calling and calling...no message left, and when you answer no one is there.

This is a number from the Fatigue Institute.  I tried to order some of the pills that they say can help with fatigue and weight loss.  The guy that I talked with kept trying to sell me all kinds of stuff.  I finally had to tell him to cancel the order because I told him that I was not interested in anything else.  He finally relented and let me off the phone.  I was so mad, I called back the next day and cancelled the order anyway.  
Apparently they have sold my information to any and every company on the map, I get calls from all around the globe.  After getting my confirmation code for my cancellation, I told them to put me on their do not call list.  They claim that it would take about a week, but since then, they are still giving my number to other companies to call me...This is getting frustrating...

kept calling and calling no one answers when i say hello
i call back and im left on the line for a long time.

i also received a call from this number yesterday; but did'nt answer.

this number keeps calling me, hanging up, not leaving message. when i call it back it answers "thank you for calling the Adrenal Fatigue Institute" What is that?!