After you file

I got a letter, it was because I claimed the RRC but received the stimulus after I filed it.  The notice said if I agree to the amount that I would not need to respond so I didn't. However when the deposit was not near what they computed I tried calling finally got through 10 hours later and the representative said she could not tell me anymore than that. I checked offsets because I don't owe anything but I wanted to make sure, nothing there. .However and the irs website says still under review and I have not received any more money.