You are asking from TT Live, for which you paid extra.
https://ttlc.intuit.com/community/expert-review/help/how-do-i-connect-with-a-tax-expert-in-turbotax-live/01/27282
5 AM to 5 PM, PT, Monday–Friday
or
Contact Customer Service
5am-5pm Pacific Time (8-8 Eastern) Monday - Friday
https://support.turbotax.intuit.com/contact
800-446-8848
Of course, if you "truly" did not e-file yet, either by yourself, or thru your LIVE agent?
...then it's possible that someone filed their own tax return (not yours), but mistyped their own email address for their confirmation notices.......and it just happened to be yours. With millions of taxes e-filed every year, this happens 10's or 100s of times.
True ... folks get emails as well as verification codes on their phones meant for others and then the other folks post here that they are not getting the codes or emails and wonder why. So you can log into your account just to make sure no one has accessed it by mistake or intentionally then change your password and/or turn on the 2 factor security option if it is not already on.
To update your TurboTax account, see this TurboTax support FAQ - https://ttlc.intuit.com/questions/1900724-how-do-i-update-my-turbotax-account-information