I missed it too. I don't answer my phone unless I know the number and I don't call the number back unless I get a voicemail. If its really important, they'd leave a message.
I wish congress would stop listening to the telecommunications lobby and making it easier for robo calls and the like to call cell phones. I block anyone who I cannot get reliable info, especially if they already have a history. People need jobs, have people actually know who they are dialing instead of picking up a call if it happens to be answered then asking for information they are not entitled to in the first place.