Even the so called 'no call' lists do not work. I do not answer my phone if I do not recognize the number. I encourage callers to leave a message as I will block unknown numbers that do not leave messages. My mother was in a memory care unit and the caretaker called, failed to leave a message and was blocked. Unfortunately I missed som updates on my mother's condition because of my policy. Due to the nature of my primary job I sometimes have time to pull up the information on phone numbers calling me. If I have enough time I file a report with the authorities on the caller and their non-adherence to the no-call list. I had over a thousand letters requesting political contributions from my parents that I opened, placed in the postage paid, self-addressed envelopes and dropped off at the post office. E-mails are horrible and I have yet to figure out a way to make them stop. Once you request that a group stop, you get added to the list of two other like minded groups.