The story:
He was talking non-stop. No one even talked back to the guy, he was constantly talking, I couldn't even hear enemies at times. Then another player messaged me asking if I could mute him. Normally I'd ask that individual to manually mute him in players list, but I actually agreed with him that it was annoying and gave him a regular one map mute, not an extended one. Then he rejoined to avoid my mute and kept talking, I messaged him saying that it's annoying, and no one even talks to him. He wasn't calling strats either, he was just randomly mumbling something. So then I looked at the score board and there was approximately 20 minutes left until map reset, so I muted using extended mute for 20 minutes, to make sure he stays calm. Then he started spamming TO ADMINS chat with "Oh admin abuser, I'm gonna report you, etc". I then told him "If you wish to report me, make sure to address your abuse report to ruplayer, because I muted you". End of story.

Side note:
If needed, I can spend another 5 minutes finding the demo with his mumbling and upload it here. Everything was recorded.

PS:
I have no idea where he got this from, but I didn't mute any other gwb members, or his friends. Wanted messaged me today asking why I muted his multiple clan mates. The only other mute that I issued that day was for some kid(not gwb) who actually spammed mic with scream and weird noises, but that mute was for a month, because it wasn't the first time I had to deal with the kid. Again, it had nothing to do with GWB clan or player "21".