Definitive Article on Stimulus Payments and what to do if you're wondering "Where's my money?"

https://www.cnet.com/personal-finance/have-a-stimulus-check-problem-better-not-call-the-irs-do-these-things-instead/

Have a stimulus check problem? Better not call the IRS. Do these things instead

If you have a problem with your stimulus check -- that could be the third payment going out now for up to $1,400 or any of the two checks before it -- the message could not be more clear: The IRS does not want to hear your issues over the phone. A similar note can be found across its website and tools: "Do not call the IRS. Our phone assistors don't have information beyond what's available on IRS.gov."

The push toward self-service information is a far cry from the first stimulus check delivery, when the IRS announced it would add "3,500 telephone representatives to answer some of the most common questions about Economic Impact Payments." Stimulus checks are a complex business and a lot of questions can arise, especially since the payments are so tightly tied to tax season, which is ongoing until May 17, the new deadline.

If you got a different payment amount than you expected, are missing money for each of your dependents, had a problem with direct deposit delivery, don't usually file taxes (also known as nonfilers), had your check mistakenly garnished, never got a payment even though a letter says you did, we'll help explain different approaches you can take including filing for a Recovery Rebate Credit on your 2020 tax return, or requesting something called a Payment Trace from the IRS. Plus, here's what we know about a fourth stimulus check.

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More ... way more, at the link. Trump or was it Mnuchin shafted non-filers and low income people with no second stim payment until filing for a tax return payment. And the IRS is understaffed, and light years behind on audits, so I suspect the personnel is just not there. "Don't call us" should tell you something.