TurboTax error of $6414.

Filed my taxes with the 1040-SR. TurboTax said I was getting a refund of $7313. I thought that was a lot, but figured that extra $6,000 Senior deduction was the difference. Today I checked, and the IRS amended my return and is sending me $894. Called the IRS.  Turns out TurboxTax said I owed $0. taxes on my $37,000 SS benefits.  Looked on the SS worksheet, and TurboTax entered the $37,000 on line 1b - "Benefits exempt from US tax due to living abroad..."  Checked my profile which says I lived in NC the entire year.  Tried to call TurboTax to report this.  Got a woman who sounded like she was just waking up from a nap.  Said she needed to transfer me to auditing, but there was a 40 minute wait.

 

This is a really sloppy error.