Who called from 5207512742

Caller called twice no message.

Caller called once one day and no message.   Then called on another day and I answered but got hung up on.  So I called back and they kept hanging up on me.

Said call was from Publishers Headquarters, I hung up

I have been getting phone calls from this stupid company for over a year.  I have repeatedly told them to put me on their "DO NOT CALL LIST" but they continue to call anyway.  They even call me on my cell phone!

Does anyone know more about this company?  I am a lawyer and I am at the point that I am willing to file suit.

PS: I have called back too and they just hang up.

keeps calling my cell phone, leaving no message. very irritating.