Just got a call. No message. No idea who this is

Just got a call same thing...don't know who they are and they left no message

left an automated voicemail about a medication and possible class action lawsuit.

STOP CALLING MY PHONE.   I DO NOT HAVE ANY BUSINESS WITH YOU!

I always say "gotcha--that's a $10,000 fine--you're busted, and have a nice day."  Even though I am making that all up--no one from that number (or any other renegade marketing number that calls me and hear me say this) will ever call again.  Yes, is pseudo-drama--but it works.