I found a vulnerability in WhatsApp which allows the attacker to temporarily lock you out of your account (which results among other things in a loss of productivity e.g. stemming from a loss of the chat history).
I've reported it via Facebook's bug bounty program but it was rejected and the provided argument was wrong/incorrect/false. What's worse they closed the "ticket" without allowing me to refute their argument.
What should I do about that? I'm thinking of resumbitting it again.