So, it turns out someone DID file a tax return as me, a few weeks ago. The IRS had "flagged" it, and luckily I called and reached a person who went through an extensive verification, and then advised me of this situation. I have to file by mail, so it will be likely many months before I see my refund. Supposedly a letter was mailed to me by the IRS about this situation on 8/15, but it has not arrived yet (and we are 9/1/21). Thanks for your help all.
