Have you tried the guidance at
https://www.irs.gov/refunds ?
I know that people who amended their 2020 returns in April are just now (Jaunary, 2022) starting to see their refunds (from the amended return).
The pandemic relief has slowed things down mightily at the IRS, with the IRS unusually overwhelmed. Don't believe the timeframes the IRS is giving, except the ones saying, the refund will arrive after "more than ____ weeks."
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