Choose the right purpose for the message
Decide whether the message is meant to inform, apologize, ask, support, or close a practical loop. For a message about how to apologize to a customer for the wrong item, use this factual base: confirm the order, charge, booking, or service problem and separate verified facts from what is still being checked.
Use detail that helps a decision
Include the smallest set of details that lets the recipient understand the impact and choose a response. Offer the available refund, replacement, correction, or escalation with dates and ownership. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Know what the message cannot achieve
Do not use empathy as a substitute for a remedy or ask the customer to repeat information you already have. Move payment, privacy, accessibility, and product safety incidents into the documented specialist process immediately. The message can offer clarity, but it cannot guarantee forgiveness, agreement, attention, or renewed contact.