Well to clear up clearly false information and how it's taken completely out of context.
People who pointed out that tunneling can be a tool to grief one person throughout several matches are correct. This can possibly turn into problematic behavior if there is proof a killer has been targeting always the same person throughout several matches. Basically, the killer only tunnels the same person over and over again, not just one or two or three matches, but a lot of matches or each time they see each other.
This clearly indicates it's a personal issue and not related to the gameplay itself. They're actively going out of their way to ruin someone's experience - this is considered griefing and essentially harassment.
If you try to use the support website to show "I have proof camping IS reportable", maybe you should have checked the F.A.Q:
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