I answered "hello?" The caller responded, "hello?" so I responded again with "hello?: The caller giggled flirtatiously and said she was soooooo sorry, she was having a problem with her headset. She said she was calling because I had stayed at one of their resorts recently and I had qualified for a 75% savings..... and then I hung up.

Did not leave a message.  Blocked.

Couldn't explain it any better,the same exact thing happened to me about 6 hours ago.Same head phone story and hung up on me.

Same exact scenario.  It's a prerecorded message to make it sound like you're speaking with a real live person.  I've received this identical call several times.  Blocked now.