Don't answer the phone, unless you really want to. There's no point. If they can't leave a message, it's not really important.
I get these calls all the time and I never answer. Instead I stop the ring, and put the number in Google and end up on this web site.
Thank you all for telling us about the stupid people in 'Murica. For if it wasn't for you, I might never know the phone call from stupid people wanting stupid [***] and wasting my time.
Just be sure to add those people that you work with, deal with, play with, in your contacts so when they call you know to pick it up, and don't get frustrated.
It's the 21st century. You get spam, junk mail, stupid phone calls. Gotta filter it out.
This number showed up on the caller ID on my cell phone. No message. I called back but got a busy signal. My number is listed with the DO NOT CALL registry.