After you file

irs said they sent my refund.  turbo tax emailed me a day prior to be on the look out that it could possibly show up that same evening.. it hasnt.. a day later it's still not there.. what is holding up receiving this refund?  is turbotax delaying my payment?  I am not understanding why it's not been seen as deposited into my account when both turbo said to expect it as well as the where's my refund irs.gov site shows it's been sent.  what is going on ?