Same here Lachlan, called yesterday 20th April and then today (just now) 21st April.

Calls then hangs up without saying anything

I rang this number back and they told me its a online bookmaker from Darwin!  Don't know how they got our number!?! They were going to remove our number from their list but lo and behold a couple of hours later we got another call looking for someone.  I asked why they kept calling and they said it was about our online account...but we don't have one!!!!