There is a difference between being professional and provide exceptional service, and faking it!
At a high brand store like this, the staff must be hand-picked to accommodate the level of clientele coming through your doors.
With high priced tags, customer service is key to up-sell and make that shopping cart as high as possible, which makes a big difference with +K price tags!
How hard is it to find professional staff? Not at all. Other stores have them, and I'm sure you'll lose customers to the other store next door that carries the brand! Unfortunate!