It has probably been posted here before but it is just so [insert your favorite string of profanity here] frustrating. ROBO CALLS!! I have finally taken to making my outgoing message say that if I don't recognize the caller id number I will not answer so leave a message. If they don't leave a message or if the message is from someone I don't know or don't want to know then I block the number. There isn't much more anyone can do besides turn off the phone.