I got the same message from "Senior Citizens Alert" in reference to fire alarms etc. for anyone in the household who is a senior citizen and should have one. Well I am not of senior citizen age anyway. They called right when I was in bed sound asleep last night. Ugh!
Don't know why, but when I block a number it still rings once - then stops. So I don 't even acknowledge that the phone is ringing until it rings twice.