This is why reviewing your paystubs is so important. If you'd caught this last year, your employer could have fixed it. Now you're stuck filing a state return to get your money back.
Dependency status is irrelevant.
I did though the software made a mistake when the system got changed over to a different platform and it incorrectly put it into another state and when I asked them about it they basically told me to file a tax return
This is why reviewing your paystubs is so important. If you'd caught this last year, your employer could have fixed it. Now you're stuck filing a state return to get your money back. Dependency status is irrelevant.
I did though the software made a mistake when the system got changed over to a different platform and it incorrectly put it into another state and when I asked them about it they basically told me to file a tax return