You still owe the tax to the IRS even if your employer or payroll department was the one who messed up by not withholding enough taxes during the year. You employer should be withholding tax according to how you completed your Form W-4. However, the IRS considers it the employees responsibility to make sure enough tax is being withheld.
You may want to ask them to show you a copy of the W-4 you submitted (if you submitted a paper copy). If you filled it out online, then check to see if you filled it out properly.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"