Why would a University not take the complaints seriously and put a stop to this?
Because it isn't as important as you seem to think it is.That's why.
I assume this is what you started spouting off about on IRC last night before I re-banned you? Given that a ban was already in place for you, you were never going to stay there very long. You then connected through a proxy to try to beat the system [edit] Suppose you're going try telling me THAT was bloody iranians as well [/edit]
So its ok for you to abuse your ISP, but not other people, right?