Collect Pros Called CS - Nicole - got no help or infformation. When ask to speak to supervisor-was hung up on. Woburn Massachusetts

Received collection notice,August, 2015,  dated 05/20/2015, from Collection Pros for payment of  $274.05 for subscription to Entertainment Weekly Magazine.  I did not subscribe to this nor have I ever received any of the magazines.  

I attempted to call Collect Pros and got nowhere.  When I requested to know where this facility was, I was told they could not give out that informatin, so I told CSR Nicole that I wanted to speak to her Supervisor, she quickly disconnected the call.

Then I went on line as instructed, but was unsuccessfull in filing a dispute.

Please advise as to the next step I should take to resolve this matter.