Once you've e-filed, there is no refund available.
First, review your TurboTax Online fees by using the instructions below.
https://ttlc.intuit.com/replies/4202093
You may be able to reduce those fees before filing by removing add-ons. See the instructions in the TurboTax FAQ below.
https://ttlc.intuit.com/replies/3301994
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***