Sign of the times. Some sales people get up themselves when their market is hot. The same people usually crash and burn when the pendulum swings back because customers have long memories.
It looks to be a lovely watch the 6119 (though I’d take an 1815 in preference every day) but it is not worth the hassle of dealing with crap for. You have £23k to plonk down an a single piece of jewellery and that should make any competent sales person approach you with due respect.
The good news is that you later found an AD worthy of your patronage. I hope you have the full customer experience you deserve with them.