Apparently, i made the biggest mistake by forgetting to ban this dude:
https://www.mycast.io/profiles/198654/username/user_198654
Now i can't ban him anymore because his acc was registered on May 25th. Planning on private messaging one of the admins later so that this spammer can get banned.
Since i can't do anything to remove the account, i got the brightest idea ever by trolling back the spammer since i am a mod (and mods are able to edit other people's stories and roles btw, so yeah, if you know what i mean)