You will get your refund. If you entered the wrong account number, the bank is not going to know where to put your money and reject the deposit. It will be sent back to the IRS. When the IRS receives the rejected deposit, they will issue a paper check to the address on file. The IRS gives a timeframe of 6-8 weeks. I have been seeing this process go much faster than that.
You will be able to track the process of your check on the where is my refund tool as soon as the IRS receives it back and reissues it. https://www.irs.gov/refunds
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