Pizza Hut Australia (alternate ph.no.) Probably just calling to confirm an order you made.

Calls from this number are from Pizza Hut's call centre which is located in Brisbane. They will be calling in relation to your order so it's in your best interests to answer!

Oh good grief.  It looks like Optus is calling me from Brisbane now.  Over the past week I have received calls from a Sydney number, a Melbourne number, and now a Brisbane number.  I didn't answer the calls.  Please stop this harrassment OPTUS.  Crank calling your customers is STUPID.