I picked it today and heard office type sounds in the background, sounded like a group making calls, I said Hello twice and no reply, so I hung up.

I got a call from this number, the sound was very broken and he was asking for someone, I couldn't make out who. I told him he had the wrong number and he then replied, "Ok, so you'd like to go on a vacation, wouldn't you?" There were multiple voices, perhaps an office or something of the sort, in the background.

Got a call from this number and it went on the answering machine, but they left no message. I called this number back and I got an answering machine for Blugreen Resorts. I didn't leave a message, but figure they will call again so I can get more info. about how they got my number. If I get more info. I will post it.

Keep receiving calls from 231-995-6600 and they are not leaving any messages.  I have no idea who it is but it's driving me crazy that they keep calling me.  No idea where they got my number.