Complaint Review: Nationwide Reader Service

Nationwide Reader Service is trying to make me pay $60.29 for something I did not buy. Most probably they got me on the phone with some strange explanation or offer which I did not believe to be a trap. I do not live in the US any more. I moved out of the country a couple of months ago but the owner of the house in Miami where I still receive mail is receiving letters from this sick company.
Is there anybody in the U.S. (authority) who can stop this hound? How long should people wait to get some protection from the Government, from this inmoral actions committed by overambitious companies?

Adrian
Lima
Peru