I get calls just about everyday from numbers like this. Just a succession of 847 numbers that either the prefix or suffix changes, so it's obvious that they're spoofed numbers and scam calls. Do NOT answer these!
Oh yeah, one of them the other day was even from my local police department. Since I hadn't done anything wrong, I knew it had to be spoofed and therefore a scam. It wasn't even their main number, so that was another clue. These scammers are just annoying and pathetic!