Cabin Crew often get memos with regards to service and conduct towards flight deck and related issues. we never see them, unless you ask them kindly to have a look.
but .. yes it is true.
you can also read your Part A, as it make mention of this type of thing as well with regards to service allowed in the flight deck.
so, I guess it's goodbye New 330.. no choice but to resign as you said, because it's all true.
not to support the ridiculous regulation of this place, but you mentioned a persons name in your post, I know him and is quite a good guy. upper management, but not one of the village idiots.. not yet anyway.
Poisoned by Compromise
Krunch