It is very difficult to trace the company you are referring to, which was operating in 2011, considering that in Australia there are, more and less 11 companies running Bitcoin/crypto exchange business.

My friend buyed Bitcoins in 2011 from Austrian Company, they make payment via Bank. After few months they lost his iPhone where is stored all data from company and Bitcoin account. From that time they is unable to find that company, i search for him but i can't find nothing. I see lot members here know all about Bitcoin from start. Maybe anyone know who sell Bitcoins in Austria 2011 year, and where can be that Bitcoins stored. They know email used on that company and we can recover them.