The Telstra EFTPOS Outage over the weekend severely impacted numerous devices, such as EFTPOS and ATMs. There were outages reports from all around Australia except Northern Territory. Telstra took approximately two days to resolve the problems. According to the ABC news website report, "Telstra says the issue has finally been resolved, and has announced it will discuss compensation with its business customers on a "case-by-case basis".
Source available: https://www.abc.net.au/news/2018-11-03/telstra--outages-eftpos-atm-resolved/10462826