what is Ban evading??
Ban evading means interacting on the forum using another account while at least one is currently serving a ban. You are only allowed to create a Meta thread about your ban and that is it. However, in the case of OP they have been ban evading for a long time.
and why are you banned?
Probably signature spam. His recent tantrum was also a different type of spam.
i guess administrator should unban you , try giving them some money and they will unban you , not sure how stuffs work here.
No, they should not and no that is not how this works.