You have been hacked, you do not owe anymore money it's a scam. The same thing happened to me, they wanted me to pay $3400 to them. They changed my 2020 form to show I made a lot more money than I did. I did print out my 2020 form when I finished in 2020 for proof. I Contacted Turbo Tax Intuit and they just said to contact the IRS.
