Did not receive letter from IRS
I only got half of the refund from IRS Federal. When I check the status on their website it says that "We received your tax return and it is being reviewed. You will receive a notice from us requesting you to provide additional information within 30 calendar days. You may not receive all or part of your refund until we receive and review the information we requested. If you need more information after you receive our notice, call the number on the notice."
But I have not received any letter yet. I could not find that letter anywhere on the website and when I call them I get only automated response and no customer\real person support (may be because of Covid-19 situation). Can someone guide me what to do now?