There was a situation here in Canada where the thieves attached a device on the underside of the ATM machine somewhere which could read the client card numbers, etc. It was with one of the major established banks.

You need to pursue this theft problem as far as one can with screen printouts of the illegal withdrawals, etc. Otherwise how would it stop for your account?

Since you are in the U.S., I am not familiar with the different consumer financial service organizations and how they are structured/regulated. Here in Canada each of the major banks do have an internal ombudsman, also a federal government organization that regulates our banks here (which may explain why Canada hasn't crashed as badly in the mortgage credit fiasco), plus a 2nd different federal organization that is aimed at Canadian consumers to educate the public and provide direction on online financial frauds, etc.