How can I speak to a live person?

Before you try to talk to customer support or anyone "live" you have some things to look for:

The "government" wants your 2017 return?  Did you get a letter from the IRS?  Is there a letter number or CP number on the letter?  Does it say you did not file a 2017 return or that you did not pay your tax due for your 2017 return?  Your only proof that you paid would be your own bank./credit card records.  TurboTax never knows how, when or even if you paid.

And....check your account for the 2017 return to see if it was accepted when you filed it.  Maybe it was rejected and you did not notice or fix it.  If your account says anything other than "accepted" (Like rejected, printed, ready to mail...) then it was not filed and you still need to print, sign and mail it now.  If you owe tax due for that return, you will also owe interest and penalties.

Do you know how to access the account you used for your 2017 return?

Many people have multiple TT accounts and forget how to access them.  Log out of the account you are in now.

Account recovery

https://myturbotax.intuit.com/account-recovery/

https://ttlc.intuit.com/questions/1901535-forgot-your-turbotax-online-user-id-or-password

Or did you use the desktop version of TurboTax?  If so, the files are on your own hard drive or any backup device you used like a flash drive.

https://ttlc.intuit.com/questions/1901486-how-many-turbotax-accounts-do-i-have

https://ttlc.intuit.com/questions/1901535

https://ttlc.intuit.com/questions/1901659-find-your-tax-data-file-in-mac

https://ttlc.intuit.com/questions/1900721-find-your-tax-data-file-tax-file-in-windows

To get a copy of your previously filed returns prepared with online TurboTax https://ttlc.intuit.com/questions/1900748-how-do-i-get-a-copy-of-a-return-i-filed-in-turbotax-online

https://ttlc.intuit.com/questions/1900748-how-do-i-get-a-copy-of-a-return-i-filed-this-year-in-turbotax-online