Don't know who this is, caller didn't leave a message.

I did not answer and they did not leave a message.

This a collection agency. I have no idea why they are calling me. Good credit nothing in collection.

One of those calls where I answer and it takes a minute for them to respond (dam auto-dialers - they shouldn't be allowed to use them without a dedicated person ready to respond).   Anyway, I'm not the person they wanted so I said so - but I very much doubt they're a first-level collection agency:  I've had my phone number over 15 years, so I'm guessing they're buying last-ditch long-shot debt  ("We have a pony express bill that you never paid, do you want to take care of it now?")

Another scammer using a spoofed phone number.  This number actually appears to belong to an authentic locksmith business in Arizona, according to reverse look-up, who is just as much a victim as the rest of us.  Blocked it.
Don't complain about being on the Do Not Call list and it doing nothing.  Criminals don't care about lists or laws.  The Do Not Call list is honored by lawful companies.  Buy a phone system that allows you to block numbers instead.  This site needs to add "Scammer" to the list of Call Type because nothing else on the list is correct....hence, my listing it as a "telemarketer".