Troll Comment Responses

You manage an account's comments and must keep control when trolls appear. Based on the info below, write troll comment responses.
Requirements:
1. first define four tiers (fair question, venting, malicious rumor, personal attack), each with a handling action and a sample reply;
2. replies must not insult, name-and-shame or pick fights; clarify facts in one sentence when possible and do not argue;
3. for rumors, state only evidence-backed facts; leave unverified claims as placeholders; never invent the commenter's identity;
4. if reporting entries or deletion rules are unclear, mark them as placeholders to confirm with me, and avoid superlatives.
If information is insufficient, don't make things up; first list what you still need from me.
Output format: a tier-handling table plus four sample replies, ending with one principle line for the team.
Situation info: [account type, the dispute, key points from comment screenshots, desired outcome]