The Dark Knight Rises (2012) listings deleted from my page

In the continuation of an ongoing problem, several listings in my filmography pertaining to The Dark Knight Rises (2012) were just deleted. To the best of my knowledge they were sound department, cast and music department. All of those were added back in 2011, when the page was monitored closely by Warner Bros. and anything insufficient would've been deleted within hours, so they've re-checked their papers, confirmed my contributions and okayed them. While it was unpaid work, I was indeed in the papers, that's the beauty of signing the waiver.   

Not sure if anything else is missing, but if the edit was done through my page I assume that it was in bulk, so something else might be deleted, either in that exact edit or another one in a very close proximity. There is someone's crusade against me that just goes on and on for years and can probably be traced to Russian Federation (although with that rate the person behind is probably using the VPN). For some reason it feels unlikely that it's someone thinking of me as a fraud (even if my imposter syndrome would probably agree with that notion). I assume that the logic behind is either to decrease my STARMeter (which I don't care about) or annoy me deleting my 'connections to business'. It only very mildly and partially manages to achieve the latter and for a completely different reason: I was a bit enthusiastic early on in my filmmaking endeavours to keep track of my filmography, keeping the tabs as often as I can and trying my best to add a lot to IMDb. It mainly just remains as a husk-like habit at this point, with the IMDb part being of especial reluctance as my depression, life circumstances and regrets settle in too often. Having to deal with all this, while a minor nuisance, doesn't help since it always feels like for each step towards making the situation better I have to take two or three steps back to fix something that was added ages ago but is tarnished in some shape or form.  

To be honest, I just can't wrap around my head how this even happens that much. I have a Champion badge which in theory would suggest that my edits are substantiated and/or researched and yet I get "Unable to verify" on a routine edit that actually corrects cast credits according to IMDb's very own guidelines (#220827-205611-879000; I really hope a resubmission which is #220828-201019-908000 won't suffer the same fate) will go through, and yet someone casually waltzes in once in a few months and just deletes anything they want from anywhere, ranging from a name page with an IMDb Pro attached to it to dozens of titles. Then in some cases I have to re-confirm the listings which are sometimes deemed ineilgible despite being eligible before several times like in the case of Bohemian Rhapsody (2018). A bit unfair, if you ask me, but I'm playing by the rules, so I just added to my plans to listen through the scenes in that movie meticulously until I will pinpoint my voice in some shape or form and will have an audiovisual proof to go with the studio's confirmation letter. 

I'm not even frustrated about it all, just puzzled and eager to contribute in any way. Maybe it's time to introduce some additional standards of verification in order to decrease both  "Unable to Verify" for legit edits and bulk edit vandalism/harassment issues.