Likely a telemarketer/scammer. No message left. Lots of (678) numbers appearing in the caller ID in the past few weeks: 678-853-2325; 678-608-4478; 678-681-9068; 678-999-8880. When you get that many 678 numbers showing up in the space of a few weeks.....its not coincidence....its likely scam. Recent news reports say that what you see in the caller ID is not necessarily correct. Most of these calls are made from overseas.....scammers can put anything they want into caller ID. Police advice was: don't pick up the phone.