Please see the answer below that included this link and information.
"https://www.irs.gov/coronavirus/economic-impact-payment-information-center
For security reasons, the IRS plans to mail a letter about the economic impact payment to the taxpayer’s last known address within 15 days after the payment is paid. The letter will provide information on how the payment was made and how to report any failure to receive the payment."
Since the IRS is not taking calls and offices are closed, there is nothing else you can do. Perhaps later this year, the IRS will reopen to calls and you can call then, or you can follow the process already in place for you to correct errors when you file your 2020 return next year.
