What she paid: a $3,400 debt. She says she has the paperwork to prove it, but the IRS disagreed and filed a tax lien against her. The IRS even withdrew $5,500 for the original $3,400 plus interest over nine months from her bank account.
"I'm like, 'Why are you garnishing my account? You have the money. In fact, you have it twice,'" Bindbeutel said. "[But] nobody can find the money."
"If you do not know your rights, it can feel like you are being run over," said Nina Olson, at the Taxpayer Advocate Service, a government agency that helps taxpayers when they face problems with the IRS.
Last year, the advocacy service handled 300,000 cases of taxpayers who had an unhappy experience with the IRS. Although Olson's agency examined Bindbeutel's case and said she was right, the IRS has yet to pay her back.
Bindbeutel said that an IRS agent came to her house twice looking for a payment -- once before removing funds from her bank account and then afterward. The second time, the IRS wanted $7,000 to cover the original debt and additional interest and penalties.
"The harassment wouldn't stop," Bindbeutel said. "They kept calling me. They'd show up at my house. They would send letters saying I owe money."
Her tax lawyer, Paul Spizzirris, said that the IRS acted more like a bully than a government agency, and that its heavy-handed tactics caused real harm.
"They're a bully," he said. "The IRS is a bully. ... Pushing around a young ... mom trying to make her way in a recession with a small business and one employee, which is her."
Olson said the IRS increased its lien filings by about 550 percent since 1999. "Just for the quarter of the fiscal year of 2011, it's been up 28 percent from the year before, which is amazing in this economy," she said.
Lawmakers who oversee the IRS -- Sen. Carl Levin, D-Mich., and Reps. Dave Camp, R-Mich. and Charles Boustany, R-La. -- did not respond to ABC News' requests for comment. A representative for Sen. Max Baucus, D-Mont., said the case was "certainly an issue Sen. Baucus will look at closely."
In a statement, the IRS said: "We have referred this case to our independent inspector general. ... If an IRS employee took any inappropriate actions, and if those actions caused harm to this taxpayer in any way, we sincerely apologize."
Two years later, Bindbeutel said the money has become secondary.
"Now it's not the money anymore, it's the principle," she said. "This is wrong. You shouldn't be allowed to do this to anybody. Especially when I've paid it twice."