Payment protection insurance (PPI) is, once again, the most complained-about product so far this financial year, the latest Financial Ombudsman Service figures reveal.
A number of RBS and NatWest customers have complained of loan payments being taken out twice, leaving their accounts short of cash which may trigger overdraft charges.
Some of Britain's biggest banks are facing a hefty compensation bill today after the City watchdog found "serious failings" in the sale of complex financial products to small businesses.
The Royal Bank of Scotland crisis is now into its ninth day and could last into next week, though the group claims it has solved most of the problems for its 17 million beleaguered customers.