Make room for the other version
Ask what the other person understood before assuming that you are arguing about the same facts. For a message about how to apologize for shipping to the wrong address, use this factual base: confirm the order, charge, booking, or service problem and separate verified facts from what is still being checked.
Correct the record precisely
Correct only what you can support, acknowledge any real impact, and propose a practical way to prevent repetition. 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.
Agree on a testable next step
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. Do not recruit an audience, publish private evidence, or turn a misunderstanding into a campaign about character.