I got 34 calls before noon a few weeks ago - all of them unknown numbers. I clicked the 'screen call' option or ignored it. One single person left his name an

I got 34 calls before noon a few weeks ago - all of them unknown numbers. I clicked the 'screen call' option or ignored it. One single person left his name and message - an old friend. Everyone else I marked as spam, so the next person may get a warning, and blocked. It works great.