Filed 2018 tax return using e-file, Federal as well as State got rejected, I had to file the tax by mail, I was charged $24.99 by Intuit. How to get money refunded?

Checked AGI and it was correct. Rejection was for unknown reason.

After you file

To contact TurboTax customer service/support use their contact website during business hours.  If the problem concerns any type of refund for fees, use the key words billing issues and do Not use the word Refund or you will get a phone number for tax refunds.

Support is open from 5am to 9pm Pacific time

Use this website to contact TurboTax support during business hours - https://support.turbotax.intuit.com/contact/

Support can also be reached by messaging them on these pages https://www.facebook.com/turbotax/ and https://twitter.com/TeamTurboTax