Account for the relationship as it is now
Use a tone that fits the present relationship, not the closeness, authority, or access that existed in the past. For a message about how to apologize to customers for a service outage, use this factual base: confirm the order, charge, booking, or service problem and separate verified facts from what is still being checked.
Ask without assigning an obligation
Explain what you hope for while making decline, delay, or a different format genuinely acceptable. 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.
Keep the ending honest
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. Avoid future promises, guilt, flattery, or nostalgia that imply the recipient owes you access.