I got the Department of the Treasury Internal Revenue Service mail below asking me to call 1-800-829-0922. I do not know if this is a scam or not. Can anyone help me determine if the mail is legit or a scam? I know there are a lot of scammers these days, so I always make sure I verify the authenticity of a letter, email, or text message before doing anything.
The 18008290922 Recovery Rebate Credit (RRC) Letter

Contact number: 18008290922
We previously sent you a notice stating we changed the amount claimed as a Recovery Rebate Credit (RRC) On your 2020 tax return due to one or more types of errors: your adjusted gross income exceeds $75,000 ($150,000 if married filing jointly, $112,500 if head of household), the amount of the RRC was computed incorrectly, our records show you already received an advance, payment Of RRC, the Social Spity numbeLfor ne or more of your qualifying dependents was missing or incomplete, the last name of one or more of your qualifying dependents does not match our records, or one or more of your qualifying dependents exceeds the age limit.
This letter provides more information about your right to appeal and we apologize for not providing it in the previous notice. If you agree with the changes we made, you don't need to take further action. If you don't agree, call 800-829-0922 (press 1 for English or 2 for Spanish, then press I for notice received, then press 3 to speak with a representative) to review your account with a representative. You can also contact us by mail at the address at the top of this letter. Be sure to include your taxpayer identification number, the tax year (2020), and the form number you are writing about.