Why are some IG stores so rude?

Not only they assume you're a cheapskate but also make stuff up just to annoy you even more, Idk if he was using the luxury store salesperson move here to hurt my self respect but I didn't like being treated like that when all I've been was nice to them

Not only he left me on read for hours the first time I showed interest, he has been doing that since his last reply Even when I went forwardands appreciated his collection