Who called from 7408185143

Ah, so you think the local police are outsourcing this now?  We used to get calls directly from the Police Athletic League (PAL) in our city.

Got the call today and told them to remove my name.  They said they were exempt from the "Do Not Call List".

>> They said they were exempt from the "Do Not Call List".  <<

Quite possibly, particularly if they are criminals.

The DNC list does not automatically block calls.  Instead, it provides a list of  "do not call" phone numbers to legitimate telemarketers who pay a fee for the list.

The DNC list exempts political callers, survey organizations,  charities and companies with preexisting business relationships, but these organizations might have their own, internal Do Not Call list (ask them).

The DNC list  is not effective against criminals, spammers and scammers, because those people do not subscribe to the DNC list, and do not care if you are on or off that list.
Its purpose is to stop calls from legitimate telemarketers, and it does a pretty good job at that.

This number just called our home number and when I answered, you can hear the caller hang up.

They have to remove your name from their list if you ask, whether they're exempt or not.  

The call is obviously from a scammer.  Don't answer if you don't know the caller.  If it's important (legit), they'll leave a message.

You're welcome.