Scam trying to buy merchandise

Scammers pretending to be Telstra, offering a better plan. Asked for one-time code that had been sent via sms to mobile number, but used that to change details on our Telstra account. Beware!

This phone number was put on a "Purchase Order" from "Australian Catholic University" for a large amount of medical merchandise. The email procurement @ acuedu-au.com does not match ACU's real domain acu.edu.au. The Purchase Order is quite good at first glance, but has some very slight errors that I would not expect to see in a real PO.

The scammers have assumed the names of real people who we have confirmed work for ACU, so I won't mention those names here.