Let's be fair here. PP must receive hundreds of emails daily and although each email may be very important to the sender, said email may rate far lower on her list of priorities, and quite rightly so. PP is the Manager of Fleet (I think) and comms should be first directed to her underlings. If the issue needs elevation, then write to PP, and only then.
I know, I know, trying to get a response from further down the ladder is equally impossible.
Speaking for myself, if an issue is important and demands a response, I have always received it.
Be careful what you wish for.