If I owe back taxes and back child support will the IRS take the back taxes first and the balance to child support? or does child support come out first?

Back taxes are usually first; the IRS handles that itself, but child support comes out thru the Treasury Offset Program (operated by another office in the Treasury Department). The IRS exists to collect taxes; they have to do that before paying child support, even if it is ultimately recouped to pay for government benefits to the child and/or custodial parent (one of the main reasons government is involved in collecting it).

I always use turbotax for taxes, and child support always takes their cut. But I've never had turbotax charge me leaving my bank account negative because of it. I just had brain surgery and cannot work so my account is in the negative. I have reached out to turbotax to no avail. I understand the irs and child support have to offset payments but why didn't this happen before? How can I remedy this situation when no one is helping me resolve it?