Glitches have remained a thorn for banks across the country, with most hit with faults this year.
ATM transaction services of both ANZ and St George Bank were sporadically crippled on consecutive days in June. During that outage, Sydney branch operators of the former bank could not access its Spider teller machine platform for several hours.
The Commonwealth Bank was hit with a glitch of its own in April that prevented credit card statements from being sent to customers, and caused the company to reimburse overdue fees.
A mysterious technical fault also killed Bank of Queensland EFTPOS services in January, which caused retail businesses to lose thousands of dollars.