You should have received Letter 6419 which gave you the amount of your Advanced Child Tax Credit and for how many children you received the credit for.
You should have also received Letter 6475 for the amount of Recovery Rebate that you received.
These letters should have been used when entering the information into TurboTax. based on the status you received from the IRS, the information you entered did not equal with the IRS records.
My recommendation is to look to see if you can find the two letters mentioned above and double-check to make sure that these letters are what you entered and agree with the adjustments made by the IRS.
Double-check everything in your return and make sure it adds up to the correct amounts. Does the Advanced Child Tax Credit and the amount on Line 28 of your 1040 equal the $9,000 then how does that compare to what the IRS is saying.
Do the same with the Recovery Rebate. You may have to wait to see what the amount of your refund is before you can do this. If you disagree and can find the letters or proof that you did not receive what the IRS says you did receive then you could amend and provide your proof to the IRS when you file your amendment. It all comes down to what can you prove.
