Does Turbotax offer support in challenging the IRS when they claim there was an error on your taxes?

I received a letter from the IRS stating that there was an error on my 1040 which affected the Refundable Child Tax Credit section of my return. I reviewed the calculations that Turbotax made and I agree they are correct. Should I reach out directly to the IRS or is there a way I can have Turbotax do this on my behalf?