US Bank charges $400 for a $10 overdraft

My girlfriend, who has a checking account at US Bank, overdrew her checking account by $10. No big deal, happens all the time right? Usually they'll tack on some overdraft fees which sucks but is not unexpected. Pay the fine, bring the account current and everything is cool. So that's what she does, except she's still $2 overdraft somehow. US Bank does this rediculous thing where they charge you $8 dollars a day and so the charges keep building up. They of course don't bother to tell her and now they want a total of $400 dollars to bring the account current. She's already paid $200 to bring the account current, more than enough to cover the cost of the overdraft. WTF? Does that sound reasonable to anyone?