Once your return is accepted for processing by the IRS and/or State TurboTax has no control over the processing of your return and/or release of your refund. If you have any inquiries regarding any delay, and or letter sent you should contact the IRS or your state Department of revenue directly for further assistance.
There is a couple of FAQs to help you track your refund
When will I get my federal tax refund?
How do I track my state refund?
Why does Where's My Refund say "approved" but TurboTax still says "accepted"?
Why do some refunds take longer than others?
What if my IRS refund is taking longer than 21 days?