File this years today.
I've been helping a family member with back tax issues. He received useful help by calling the IRS. They told him to keep filing his taxes while he works through past year issues. We filed this year and the last 2 years using freetaxusa online, which was free and had the software for the last 2 tax years and this year.
You can file an affidavit with the IRS about your identity theft.
https://www.irs.gov/newsroom/taxpayer-guide-to-identity-theft
It would also be beneficial for you to verify your identity with the IRS on line where you can look at your tax transcript. They can also issue you an Identity Protection Pin. This PIN would then be required on your tax return and is designed to reduce the risk of someone filing a false return under your name and SSN.
https://www.irs.gov/payments/your-online-account
https://www.irs.gov/iden[product key removed]-scams/get-an-identity-protection-pin
