"Cockblockers" (from Greece) is a southern metal band. i don't know why is blacklisted and i can't add it normally. maybe there is a confusion with another band called "The Cockblockers" and i think is from Serbia and plays alternative or something.

check "Cockblockers" from Greece to understand the misunderstanding...

https://www.youtube.com/watch?v=dyBEHyyJF1I

https://www.youtube.com/watch?v=d8FHV2wT3tw

thank you very much...

Here's their first and, so far I know, their only album:
https://www.youtube.com/watch?v=qnYhOXsq6TQ
https://www.discogs.com/artist/6392537-Cockblockers-2

Seems like you already tried to add them in 2018. So yeah, this is the same band and they got blacklisted for being a bit more on the grunge/rock side of things.
Given that I own the album since the release, I confirm that.
Borderline, but not quite metal enough (yet)