I have received a few of these calls before and I believe this might be one of the numbers being used for the scam involving recording your voice in order to steal identity.  It starts with a pause, then a "Hello?...I'm so sorry about that, I was having a little trouble with my headset.  My name is Emily and you have stayed at one of our resorts in the past..."  It's for a free cruise in Orlando or something that you need to provide an affirmative "yes" when they ask you a question in order to proceed to a "specialist."  If you say nothing, "she" repeats the question 2x then hangs up.