Published: Feb 11, 2014 8:42 PM EST
Updated: Feb 12, 2014 12:20 AM EST

NAPLES, Fla. - Fifth Third Bank is now doing damage control after a major mistake that could hurt your credit score. At least 21,000 people nationwide were mistakenly listed as bankrupt. Fifth Third sent out letters to customers, including some in Southwest Florida, telling them about the problem.

"I have a credit protection service and not even this picked it up" says Larry Frost, a Fifth Third customer who received the letter.

Frost is angry and upset with the bank. He got a letter in the mail from the Fifth Third Bank Monday night that reads in part "between October and December 2013, we inadvertently reported that you had filed for bankruptcy."

That wrong information went to credit reporting agencies like Equifax, Experian and TransUnion.

Frost says, "I became very distressed over this." He goes on to say, "to have anything reported to my credit bureau as a bankruptcy when I pay my bills faithfully for years and never had a late payment."

Frost says he went to the Fifth Third Bank on Airport Pulling Road to find out if his credit was affected. He spoke to the branch manager there but says he didn't get a lot of information. "I told him I would have to go to other means to try and find out what was going on if they couldn't answer my questions" says Frost.

He then contacted WINK News about the problem and we reached out to Fifth Third's Corporate Headquarters. While we were interviewing Frost, Senior Vice President Marketing Director Kathy Leavesley returned my call. She says the bank fixed the problem right away and for the most part no one's credit was impacted.

That answer still didn't sit well with Frost, "the credit fairy just didn't come by and wave the magic wand and that happened."

He says he will no longer bank with there, "any banking that I'm doing with Fifth Third will be removed, closed immediately and moved to other banks."

Fifth Third's is asking customers who maybe impacted by this to use the site annualcreditreport.com to check your score for free. If you see something wrong call the bank right away.