Hello,
While you claim your death was the result of you being RDM'd whilst you were pk active (due to you partaking in a hit). There is very little, if anything, we as staff can do to verify this claim without a clip for you or your killer. Logs simply do not tell the full story.
There is not enough evidence on our end to suggest that a rule was broke in this perma kill that could subsequently warrant your character being unpk'd.