@fanfare - per the IRS, do not call at this time - that is their instructions - it otherwise just makes the situation worse
https://www.irs.gov/newsroom/2020-unemployment-compensation-exclusion-faqs
For additional information about this exclusion, refer to the frequently asked questions on this page. Please do not call the IRS. IRS phone assistors don't have additional information beyond what's available on IRS.gov.
further: do not send in an amendment:
https://www.irs.gov/pub/taxpros/fs-2022-21.pdf
Q1. What if I already filed my 2020 tax return? Do I need to file a Form 1040-X to amend my tax return to report the exclusion? (updated March 23, 2022)
A1. Unless you're entitled to a credit or deduction you didn’t claim on the 2020 tax return you already filed as described in Topic E, there's generally no need to file an amended return (Form 1040-X) to report the amount of unemployment compensation received in tax year 2020 to exclude on your 2020 tax return. The IRS began performing the corrections starting in May 2021 and continues to review tax year 2020 returns and process corrections to issue any applicable refund that is due
