I had the same case: no one answered.

Same thing - got a call about a promotional gift, saying press 1. I hung up. It is most certainly some sort of a scam.

i have no clue what this number is about but it called me twice so i called it back from another number and it automatically put me on hold.

damn telemarketing/scammers.

Got the same thing as Mike, telling me congratulations, I have just won a promotional gift.

No doubt testing to see which numbers are active (i.e., who presses 1).

received call from (424) 456-2883 on my cell, no voicemail message left by caller, search of the number led me here. FYI.