As a tax payer the IRS has prepared a list of rights that we have when dealing with the IRS. Calling the IRS or getting audited is not the highlight of any tax season, and it is good to know what to expect and what rights you have. Below is a link to the list right from the IRS regarding what we can expect from our interactions with them. It may take you a few calls or messages to get the information you need, but keeping your cool and being respectful always wins the day.
https://content.govdelivery.com/accounts/USIRS/bulletins/3853180?reqfrom=share