I had the same issue. It turns out that while I was filing my taxes, I accidentally opted to create a Credit Karma account and deposit my money into that rather than directly into my checking account. You can imagine my surprise when the IRS status checker told me that my refund had been sent, but no such refund existed on my bank statement. After talking to a turbotax agent, I found out that those autofilled account and routing numbers were for Credit Karma, meaning that the IRS sent my refund to Credit Karma. Annoying. Anyways, I logged onto my Credit Karma account, found my money, and am now waiting 1-3 business days for the funds to transfer to my checking account. Hope this helps.
