This is "Naked Wines" call centre - I had it twice this week. Second call I picked up in an instant - their computer has likely called and the delay is how long it takes for an operator to answer. Of course it would save them money if you phoned back.

I called back number (02) 9119 3725 rang once then goes to busy tone.

I keep getting this number and a long message of silence. Super creepy.

Info gathering company