You should attempt to contact the IRS at the number provided in their letter to you. From what you stated in your post it appears that the IRS is going to prepare a 2018 tax return based upon the information they have been provided. Information they have received may include W-2s, 1099-MISC, state tax refunds, Interest/dividends statements. You should prepare your 2018 tax return and file it with the IRS. You can download TurboTax 2018 at this link File your 2018 taxes
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