Yes, I'm English.
There is a lot in what you say. The main thing is that we concur, Yuming leaves a lot to be desired and has to be one of the worst teaching outlets in China.

I think it's the sound of "Mai You" to the western ear that's particularly grating. "kong pa Mai you" (I'm afraid we have none) in the context of the retail outlet enquiry, sounds nicer on the ears. I've had a lot of dismissive retorts in USA and UK though, and gone on to find the desired item in the aisle.

I've spent ten years travelling around China and found the ordinary folk really nice and accommodating[Yuming-type business people are not ordinary folk, rather, rich replacements for the aristocracy] ; however, the teaching venues now seem to be getting worse for the Western teachers-I suppose we're becoming ten a penny-one used to be treated like a film star, even if you looked like a Cyclops.