I called the IRS some time pre-2019, after they misinterpreted my $500 taxable income as $500,000. (I had to file for other reasons.) I got an agent quickly and

I called the IRS some time pre-2019, after they misinterpreted my $500 taxable income as $500,000. (I had to file for other reasons.) I got an agent quickly and he was helpful and resolved the problem.