I got in touch with an actual person at the IRS yesterday by following the prompts in this article
https://ttlc.intuit.com/community/after-you-file/discussion/my-tax-refund-was-accepted-march-3rd-it-...
There was a form missing from my return and the IRS rep said they are WEEKS behind in processing returns. He said they were shut down for 2 months and are behind on everything. They gave me exact instructions on the best way to submit my missing form. So if it's been over a month and you don't have your refund, calling & following the prompts to talk to a person is what I'd recommend. The wait was about 15 minutes when i called at 4pm PST.
