Did not answer the phone but did see Security Global come up on my phone.  Unless you are expecting a call from someone, there is nothing free in life but unwanted callers.  If they are a reputable party, they will leave a message and will not hide their outbound location.

FBI does not call.  They visit.

These scammers are using fear to incite a response.  You and I know better, however, there are people that buy in to their con.  Make sure you let people know that unsolicited phone calls are wolves in sheep's clothing!