Faction changed and Char is now bugged

Rubmycrittys - frostwolf server. was alliance, is now horde.
ive had a ticket put in since the day he was faction changed about this only to receive a automated Copy and paste response from blizzard referring to wowhead… LOL what a joke.
My char is bugged, i cannot progress in my legendary cape questline. i turned in the return of the black prince quest to magni in the chamber and he literally did nothing. assuming somewhere in the faction change that some wires got crossed or something and could prolly be a easy fix… but instead they didn’t even read my ticket to attempt to fix and refer me to WOWHEAD?!?
WOWHEAD does not fix this problem.