I get this call numerous times a day. There's no one there. I call back to see who it is but there's no ID. It says if they've reached my number in error to hit 5. I've done this numerous times but an hour later they call again.
Got this call at 5:58 pm last night, did not answer it as it is a number with no id and an area code i don't know. They let it ring about 20 times, but my cid was saying "low battery" and i refused to take the bait. After the call, the cid went back to normal, i think this may also be a part of their scam to mask their real name.