Phone support is not provided with the Free Edition. If you are using a paid version of the software or if you purchased PLUS you can get phone support when customer support is there. Otherwise, post your question here and someone will try to help.
To call TurboTax customer support
https://ttlc.intuit.com/questions/1899263-what-is-the-turbotax-phone-number
They are available from 5 a.m. to 9 p.m. Pacific time
https://ttlc.intuit.com/questions/1899263-what-is-the-turbotax-phone-number
https://twitter.com/TeamTurboTax
or
https://www.facebook.com/turbotax
For help with your pre-paid Visa card:
Call (888) 285-4169
There is a “Help” link in the top corner of the web site for the card:
https://www.turboprepaidcard.intuit.com/