Scene conversation and fault diagnosis serve different purposes
Timed Comments let viewers react alongside a scene. Viki’s policy asks that those comments remain related to the show or scene, and explicitly places technical and subtitle complaints outside that purpose. A removed technical comment does not establish that the underlying problem was fixed or ignored; it may simply have been posted in a channel that is not intended to handle it.
Convert the complaint into a useful private report
Instead of repeatedly posting that an episode has no translation, identify the series, episode, selected subtitle language and approximate point where the problem occurs. Explain whether the language is absent from the menu, text stops midway through the episode, or displayed text appears incorrect. Those are different observations. Keep any account-specific screenshots private and crop out payment details or unrelated personal information before sending evidence through the official form.
Deleting your own comment is a separate request
Viki’s writing-and-deletion help directs users who want their own Timed Comment removed to contact support. It does not document an ordinary self-service delete button there. If your goal is removal of an accidental post, say that clearly rather than submitting it as a subtitle fault. A community conversation, a request to remove your own words and a report about the player can involve the same episode while needing different information and follow-up.