In order to be clear, how many times did Phenomenaa kill you? Was it once or twice? If it was, that would not be considered spawn kill.
Also, if you go to your minecraft folder and you pull up the logs, it should display that you were killed by Phenomenaa. Unless you show some kind of proof, we cannot take action.
Finally, not all of us have access to console, so checking that would be meaningless for some staff, which includes myself.