In my first apperance to n-ice server 1,5 - 2 years ago I was banned for building transfer station (as I remember by YorVeX)
i don't remember you (did you have a different name back then?) but i am sure this wasn't what you were banned for, that's just not how us admins work, including me. here's some facts:
1. many players mistake a kick for a ban (they could easily return and continue, but they think they can't so they don't)
2. some players argue for minutes and minutes about a rule instead of complying with the admin request first and joining a discussion later - an admin at some point has no other choice but to sanction the player (but not by a ban)
3. during such discussions and especially as a result of sanctions (company lock, company reset, kick...) some players get angry and start to insult the admin - this DOES get you a ban
players affected by 3. later often claim that they have been banned for the original rule break, when in reality it was for their reaction to an admin asking them to fix it. in fact, ban reason number 1 on our servers is players getting angry because they don't like a rule an admin asks them to obey, starting to offend other players or admins or trying to ruin the game (flooding it, building a crash train...).
but banning for an illegal transfer station alone? no. the only exception would be if you keep on returning and repeat to build them.