It depends on what you chose for your refund when you filed.   Did you choose to pay the TurboTax fees out of your Federal refund?

If you chose the option to pay the TurboTax fees out of your Federal refund, that is handled by an intermediary company called SBTPG (Santa Barbara Tax Products Group).   SBTPG receives your funds from the IRS at one of their two banks, subtracts the fees, then sends the rest on to your bank.  SBTPG uses one of 2 banks--Civista Banking of Sandusky, OH, or Green Dot Bank. 

Occasionally processing will be delayed at SBTPG, sometimes requiring additional documentation due to fraud-preventive measures, etc.  In addition, if the direct deposit from SBTPG to your bank fails for any reason, it bounces back to SBTPG, who will issue you a check by mail.

If your Federal refund has been sent, you can log into your temporary account at SBTPG and check the status there.

Use the Taxpayer portal to log in at:

https://cisc.sbtpg.com

SBTPG also has a 24-hour automated phone line which will tell you your status, and during the day they have live phone support.  Scroll down a little on the following page to where it says "I prepared my return online."

http://support.sbtpg.com/hc/en-us/articles/215865528-Contact-Information