Have you contacted your bank? Does it actually showed SENT in Where's My Refund?.
Please see this IRS FAQ under: https://www.irs.gov/refunds/tax-season-refund-frequently-asked-questions
What is happening when Where’s My Refund? shows my refund’s status as approved?
We’ve approved your refund. We are preparing to send your refund to your bank or directly to you in the mail. This status will tell you when we will send the refund to your bank (if you selected the direct deposit option). Please wait 5 days after we’ve sent the refund to check with your bank about your refund, since banks vary in how and when they credit funds.
My Stimulus check shows it was deposited into an account I do not recognize. I had not even filed my taxes yet so my information could not have been available. Is it possible that someone has my info and had my check rerouted to their direct deposit account? If so, how do I go about getting my check that I never received?