why do you think it was deposited into the wrong account? whose account is it? since the IRS took the account from your tax return, isn't what is on your tax return?
if the account is closed, the money would have 'bounced back' to the IRS and a paper check would be mailed.
IRS FAQ:
a letter about the Payment will be mailed to each recipient’s last known address within 15 days after the Payment is made. The letter will provide information on how the Payment was made and how to report any failure to receive the Payment.
