I agree with
@boboxu....don’t burn your relationship with your SA. Talk to her and tell her how you feel (politely and with tact). Words like lying and betrayal are not ones you should throw around lightly...especially if you haven’t talked to her about the situation.
If you have a Birkin, you know the game and the lingo they use. There was a lady I know on TPF that wanted a black B30 but was told there was none on a Saturday (she took a black B35). In the same store that day, there was a black B30 that my SA was holding (unbeknownst to me) until my appointment on Tuesday. We shared the same SA, and her SA told her there was nothing available even though it was in the store.
‘Availability’ has different meanings in Hermes...and usually does mean not the physical presence of an item. Like Paris FSH and anywhere else in the world, ‘low stock’ to you should be interpreted as ‘I have nothing to offer you’ during grand opening/at this time....in other words....don’t bother going to grand opening if you are just seeking a bag. You don’t know what they had...yes, they might have more stock than normal, but it might have been already allocated or something nowhere near your wish list. I never take offense if they say nothing’s available...because it probably really is not available or allocated to someone else....plus, sounds better than saying, ‘yes, we have that exact Birkin you want, but we are selling it to another customer.’
I would only be concerned if you have spent tons of money and have yet to be offered a bag. Throwing a fit or slandering an SA does not help your situation or serve a good impression. If you need clarification, talk to her in person (things can be misunderstood over email or the phone)....but listen and be gracious. You won’t be doing yourself any favors if you come into the store offended or a wounded victim calling foul. SAs work hard trying to please everyone, and unfortunately, they can’t give everyone what they want. I highly doubt it’s an act of betrayal.