the thing is your ip changes every few days so he could get back on here

It all depends whether you have a static ip or your ISP dynamically assigns it. Either way, its not a reliable option really..

very few people have static IP addresses, they are really expensive!
Mostly for hosting sites me thinks!

but why did he get banned?what do ya have to do to get banned?

Or local govt employees

we're banning local government employees?
wahey why didn't someone tell me

*get's the ceremonial boot out*