Get your taxes done using TurboTax

More basically, if someone opened a Turbotax account in your name, the first thing you need to do is contact the security team at Intuit.  Use this phone number and ask for the security or fraud department.

https://ttlc.intuit.com/turbotax-support/en-us/contact

 

If you are already in touch with the security team, then you will also want to think about the other identify theft measures mentioned.