So I just received an email from PlayStation Support this morning, interestingly enough asking me for a link to the video of the noise and giving me a case number, so I've sent that to them along with some more details about the issue and (calmly/politely) expressed my frustration with the situation.
Here's hoping something is actually done, but it's encouraging that the issue was indeed escalated and they even got back to me about it.
Here's hoping something is actually done, but it's encouraging that the issue was indeed escalated and they even got back to me about it.