Called my DNC registered landline. It's the "Stop what you're doing…" get rich quick scheme. I get this exact message, or one of several variations 2 to 5 times a day. Always from a new number so there's no point in blocking.
No voicemail.
I guess my previous comment was wrong. It took a month and a half but the dirtbags reused a number. Number shown twice on CID. Now blocked.