Calls repeatedly, does not leave a message, when call back get a recording 'you have been contacted for a sales call'

They need to leave me alone NOW!

This company has called my home phone repeat lay, no one answers, just hear background talking.  Ties up my home line for 20 or more minutes.

We received a call from this number as well as from 770-854-0037.  Our tactic is to ignore the call thus not providing a record to them that the call was answered.   We have AT&T privacy manager that does not allow the caller to call our number without their providing a calling number but these putzes provide a number that circumvents the intent of privacy manager.  So basically, we do not answer any call from any number we don't recognize.  If they need to talk to one of us about a legitimate subject, they can leave a message on our answering machine.

No message.  No Id.