Okay so I'm over it now, but as I work in marketing I still think it's appallingly bad customer service 
I love shopping in little independent shops on the High Street and popped into a small clothes store today. It's been raining moderately today and I had my closed umbrella in my hand. I'd taken about 4 steps inside and the manager beared down on me, saying loudly and sternly without any greeting; "Ma'am put your umbrella at the front of the shop, put it there! I don't want my floor getting wet!!" I looked at where he was pointing and there was no umbrella stand or anything, he basically wanted me to put it in the shop doorway. And considering the area, my precious umbrella may as well have had a sign on it saying "steal me" if I did that.
I just walked straight out of the shop while he was still blustering behind me, so he potentially lost a sale. I felt like a naughty child who had been told off!
I've worked in small independent businesses before and we didn't care if the browsing customers would bring in dirt from outside - we had a broom and a mop and would just go round cleaning up after them. What was more important was that we made them feel welcome and comfortable being in the store. AIBU to be appalled at him? Bad customer service grinds my gears like nothing else. But maybe it's just the crappy area - I didn't get a single smile from any of the shop assistants in New Look, either.