computerized call, calling constantly from local number

Computerized call "Julie" with Home Security,  you ask that you be removed from the list and you are then called from another local number.  Numerous calls coming in from Decatur or Denton.  You think being local you feel you should answer.  If you can't answer  and you call that number back that number can not be reached or you receive someones voicemail, and you leave a message you just received a call from them and was returning their call to find out they did not call you and I may not be the only one that has left this type of message.  Checking with phone company they are saying there is nothing they can do about it.  Anyone have any suggestions to stopping these people from calling.