If you
efiled your return, you can't change the direct deposit info using
TurboTax.
Once the IRS releases the refund
(watch here https://www.irs.gov/Refunds ) it is then up to your bank to receive and post the
deposit. This can take up to 3 business days to happen as they check to see if
it is a legitimate deposit. If the routing & account numbers are correct
AND if your name is on the account then the deposit should be acknowledged.
If any of these things are incorrect the bank can refuse the deposit and
the IRS will convert the refund to a paper check mailed to the address on the
return. This conversion process can take 2 weeks or more to happen.