I only get banned on certain server.
You are banned from that server and that server alone for a certain amount of time. Which is 60 minutes.
What you do is find servers where you don't get banned upon entering it.
I found about 3 and I added them into my favorite servers. I get banned for about 2 minutes sometimes for wallhack.
When that happens I just go into my other server.
I have never been perm banned from a server yet. So it shouldn't be a problem.