Just contact Optus (Livechat. Facebook. Mobile App. Phone.) and request a satchel be sent out for you to return it in . Optus pays for the return.
Call on 133937 !! Choose the options wisely and make sure that you are with TV Tech support !! Once you ask any advisor about the same they will send a return satchel to you !!
To find out how to return your Fetch box Optus, see Returning your Fetch set-top-box to Optus.