How do I fix this ?

So I transfered from A to H a couple of days ago but forgot to leave the guild I was in and now , even tho I'm in a new guild I'm constantly seeing the other's guild chat which is annoying,confusing and strange.How do I fix this ? I tried to log an alt on A and /w to the GM to kick me but my character isn't on the list.

fun bug, try to open a ticket in-game, usually GMs are the one that deal with this kind of bug
Anyway try this, leave your guild, you should not see any guild chat, right? then create a guild by your own ( so you are gonna be the Guild Leader) and see what happens