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 require communication through a lawyer, use this factual base: identify the content, account, place, person, channel, access, or behavior that must stop.
Correct the record precisely
Correct only what you can support, acknowledge any real impact, and propose a practical way to prevent repetition. Give the required action, any lawful deadline, and the one permitted route for necessary matters. 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 debate the boundary repeatedly or threaten consequences you are not entitled to use. Save evidence, secure accounts, reduce access, and contact platform, workplace, legal, or emergency support when risk continues. Do not recruit an audience, publish private evidence, or turn a misunderstanding into a campaign about character.