What type of IRS letter? There should be a CP or LTR number in the right corner.
What is the IRS alleging in the letter, and what are they asking you to do?
Did you purchase Audit Defense or MAX for that year? If so, we can tell you how to contact the company that handles that service (intuit.taxaudit.com).
If you did not purchase Audit Defense or MAX, TurboTax has a free Audit Support Center you can phone on Monday. To get the phone number go to the page linked below, click the blue "Get Help" button, and follow the prompts.
https://support.turbotax.intuit.com/irs-notice/audit-support/
You also appear to be using "Live Self-Employed". I don't know if your Live feature will help you with a 2017 issue or not since you actually purchased that for tax expert help for 2018. But you will be able to reach TurboTax Audit Support people anyway by the link I provided above, and perhaps faster. They may be able to answer the questions you have. Or you can ask them if you are able to ask your Live expert anything about 2017.
You may also get suggestions in this forum if you explain your issue here. But this is a public Internet forum, so don't post any personal info.
