They called on my cell phone today. I didn't answer. They immediately called again and hung up after two rings. I blocked the number since about 95% of callers to my cell with no caller ID like this one are scammers. I checked 800 notes to be sure, and my suspicions were confirmed. Stop wasting your time answering calls from unknown numbers with no caller ID. Block their numbers and, if you have any doubts, check 800 notes. The other 5% not on 800 notes? The best explanation for those is simple wrong numbers.