Shake/stir should definitely help things. I'm already using Spectrum's Nomorobo. I was averaging 60 calls a month. Now I can go weeks without one. I got Nomorobo after some spamming shit started calling my number every day,once an hour (even on weekends) and would hang up when the answering machine came on. I asked Spectrum to block them,which they did,and was told about Nomorobo. I wonder how much money these companies make letting robo calls through?