You have a number of options. At this point, you could call and ask to speak (not text)with your SA directly. Or, you could walk in and ask for your SA. Or simply, make an advance appt with the first available (new) SA. Or, walk in and see if you like a different SA better? You are absolutely 💯 free to shop with whomever you like, at any time, for any reason. It might be possible that your Mp or Chicago SA felt they could not meet your expectations of a Constance or K sellier 28, within your timeframe and spend, but it’s useless to speculate without a conversation in person.
What I think is most likely is that they simply missed your text (they get a lot of them). Or, that they haven’t gotten back to you for reasons entirely unrelated to you (like their personal circumstances). I would not automatically assume a missed connection is deliberate ghosting. I wish you the best of luck for your shopping trip.