I would need some more information on your issues regarding the new business and dependents. Yes you can file with Turbotax. For issues of identity theft, you will need to contact the IRS by phone or on their website at https://www.irs.gov/newsroom/taxpayer-guide-to-identity-theft.
Your tax return could be rejected by the IRS if someone else has already filed. Please contact the IRS for further guidance and direction.
