Who called from 7708724989

Received a call from this number and they left no message. I do not recognize the number.

Calling about a free magazine subscription for Supply & Demand Chain Executive for businesses.

Have received repeated automated call from this number. When I pick up, there is never anyone there.

I get 3 -4  calls a day on my office phone from this number.  No answer no message.

They are calling twice a day - leaves no message when I don't answer and when I do they hang up.  Says "Barnesville, GA" and when I call it back they are asking about a free subscription renewal on their recording.  Opting to be removed from their list does not work as they have been calling me for two weeks.