fake call out of hours to unlisted do not call number

ORC International
No idea why they are calling.......

Just had a funny conversation from this number, I answered and they're like "How you doing?" I thought it was my mate Shaun and I say "What are you wearing?" and he says "Sexy black lingerie, what are you wearing?" and I said "I'm naked." He goes "that's awesome, is your dad there?" and I'm like "What? Who's this?" and he says "Umm, I think I have the wrong number".... (silence) .... So I say "Well this is awkward."
"Yes it is" he replied...... (more silence)....
"OK, we'll leave it at that then"
And we hung up.

Called as 3rd party from Fair Work Commission. Not sure if correct.