Whoever it is, they didn't leave a message.  I tried calling back and got a recording that basically said, 'thank you for calling. Your call will be answered by the next available agent."  I waited for about a minute and heard the same message a couple more times then hung up.

They continue calling sporadically but I never answer. Why don't they leave a voicemail? Spam? A scam? I don't know how they got my number but I'm annoyed

I received a call on my cell number from 949-299-1193.  They hung up without leaving a voice mail.  I returned the call from my law office land line and reached a recording:  "Hello, this is Sarah.  I am calling for Royal Sea Cruises."  It was an automated voice system, so I could not speak with an actual human.  I tried to leave a message to take my number off their calling list, but the line went dead when I spoke.  I am reporting this number to the DO NOT CALL/FCC complaint line.  I may also file a Small Claims Suit against Roy Sea Cruises, for their agent's violation of my rights and privacy.

I answered and it was someone trying to sell vacations cruises.  I said not interested - I think cruise ships are dangerous.  The guy went on to say they have other vaction spots.  I finally told him "Well my ideal vacation is visiting our nations oldest cemeteries from coast-to-coast.  And politely I said, thank you and bye. I than blocked the number.

This number calls me a lot.  Today I called it back and it was a recording by someone named Sara for a cruise vacation.  I hung up. I'm going to block this number because they call over and over agsin