I would recommend
that you get in touch with the IRS. They will be able to tell you if
there is an offset against your refund.
You can contact them
through the information found by clicking here.
Or you can visit
your local IRS office. You can find the closest office at the following
link. Just click here and then click on "Taxpayer
Assistance Center Office Locator".
You don't mention
what state you are in so I can't give you direct contact information for your
state. If you need to contact your state, look below and click on your state - this
will take you to contact information for your state.
https://ttlc.intuit.com/replies/3302452