Something about the number looked scammy, especially the 666 prefix, but halfway through my outgoing message I did pick up, and all I heard was dead silence. I didn't say hello a second time, I just hung up. These scam callers run in topical groups. Lately, it's been scam mediocre brace sales, and now scam cold-calls asking if you are a drug addict who needs to be referred for treatment. I would guess they're the latter but cannot prove it unless they try again, and then it will be obvious. I won't answer next time, though.