i have got banned and i didnt do any thing

[Richard]

i didnt do any thing only when ppl try to kill me i use /minigames and thats what every one does......

I don't know what you are banned for, but: doing /minigames or any other command that freezes you is considered bug-abuse. Do not use this.
If someone does it do: @report <name or id> abusing /taxi
Something like that                      ^