My guess is the admins can't figure out who's guilty and who's innocent of wrongdoings on their server, so they treat you as guilty until proven innocent unless they like you.
Talk about childish...
It's either that or they have an internal administration problem where some admins are trolls on a power-trip, and the other admins aren't willing to discipline them.
The worst part is that the admins, mostly Read_The_Rules, don't give any warnings and usually go straight to a permanent ban. On Monday alone, I saw about 5-8 bans handed out and didn't know why they were being done. By the way, I do understand that this is the 15th's server, and that they pay for it, but banning 10% (Server has 50-100 players everyday) of the people who play it everyday is a bad idea.
Look at the username you mentioned. They don't give warnings and go straight to perma ban because people don't do that. They're probably tired of dealing with people who can't follow the rules.
The thing about the perma-ban is that it is usually for life, unless you have a good case. I know permanent is in the name, but for life after playing only a few days (like most who play on the server) is really unfair, especially without a warning, kick, or temporary ban. Most people get permanently banned first thing for the smallest offences. The other problem is a lack of admins, meaning a player might be seen doing something but the whole story is not known; resulting in a ban. This happened to me, I believe, as I was taking down spammed defences and the admin, likely occupied, saw me doing it, didn't ask or do anything after sighting me, and then banned me with an assumption.