I can’t get a hold of irs to see if my check was returned to them

Why do you think it was?

Bcuz the account number was off by one number n it got sent back

Then if the bank rejects the deposit they will mail you a check to the addressing your return. Were you having the fees deducted from your refund?  If the 3rd party Bank SBTPG has to Mail you a check they will also take out a $20 fee for mailing a check.

Ok, but now I’m worried about which address the check will b sent to, I don’t recall if I changed my address with the post office 3 yrs ago when I moved, it’s been 2 weeks since bank rejected check n sent it back to irs.