"I trust my bank to always charge correct interest and fees."

ANZ to refund $70m after overcharging interest - abc.net.au

Bankwest a division of CBA has refunded $4.9 million to 10,800 customers after it failed to take into account customers offset accounts when calculating interest on home loans - thewest.com.au

CBA to pay $7 million for overcharged interest - asic.gov.au

NAB sued for allegedly wrongly charging fees almost 200,000 times. - 9news.com.au

Westpac to refund $11m to overcharged interest-only mortgage customers. - abc.net.au