The battle between the Coalition and key banking figures has heated up in the past 48 hours, with both sides singling out individuals for criticism.On Tuesday, the ABA said that shadow treasurer Joe Hockey had wrongly claimed taxpayers' money was at risk in the banking system, and that Opposition Leader Tony Abbott had made "a number of claims that are misleading".The ABA's tougher language, which is aimed at Hockey in particular, appears to reflect a concern that he will continue campaigning against the industry and will need to be confronted more directly. It also sends a signal to the Federal Government that the banking industry will not necessarily quietly accept the contents of next month's planned banking reform package.In an interview on the ABC's Lateline, on Tuesday night, Hockey hit back, saying: "It alarms me that the chief executive of the Australian Bankers Association is starting to run a line that we don't really have taxpayers behind [the banking system]." He added that bankers like ANZ CEO Mike Smith "will be victims of their own words".Hockey also said Münchenberg's "provocative language" was "not shared by the CEOs of all the major banks". He had a "very good discussion" on Monday with Westpac CEO Gail Kelly, he said. And NAB CEO Cameron Clyne had also engaged in a proper public debate, he added.But he took another swipe at ANZ CEO Mike Smith, who last month compared Hockey to Venezuelan socialist president Hugo Chavez. "It was the ANZ chief executive that started to add personality to this debate'" Hockey said. "Quite frankly, they will be victims of their own words ... in the eyes of the Australian people."On Tuesday, ABA CEO Münchenberg said in a statement: "Many of Mr Hockey's claims are based on an assertion that taxpayers' money is at risk, therefore governments should have greater control over banks. But taxpayers' money is not at risk."The ABA also singled out Opposition Leader Tony Abbott on Tuesday. It said he was making misleading claims, including claiming wrongly that banks always kept interest rate movements in line with the RBA's cash rate movements during the term of the Howard government.Hockey also drew fresh criticism this week from influential NAB chairman Michael Chaney. The Australian Financial Review reported that, when asked if he thought Hockey would make a good treasurer, Chaney said Australia should be looking for leaders "taking a stand in the interests of the country and not being tempted into populist statements".