Say which page of the problem needs attention
Begin with the relevant year and whether the immediate question concerns filing status, a notice explanation, affordability, or an offer review. Keep the actual document and a short inventory of available evidence beside you. An opening statement that identifies the uncertainty can make the conversation more useful than a general request to fix taxes.
Agree what would happen next
Use the telephone contact to discuss the question, then ask what work is proposed, who would review it, and how scope and fees are explained. Confirm a recipient and secure method before private papers are shared. Keep any required official response separately visible and record the next task with a responsible person. A call begins a discussion; a professional engagement needs its own clear agreement.