I am really getting tired of these calls. I have been receiving calls atleast 15 times a day from different numbers (from all over the country) They will call, I don't answer and within 4 seconds another call from a different number. They never leave a message and I am NOT returning the calls. I figure if they don't want to leave a message I DO NOT return call. My voice mail says leave a message or DO NOT CALL me back. I have blocked so many calls in the last two weeks that I keep having to clear my list because it fills up. There should be a law against this.