DD is at that age where she's just starting to get a bit of independence - walking to school, or when we're out doing some shopping I'll let her go into a shop alone while I'm in another shop etc.
Over and over again, staff are rude/unhelpful to her. And it's not just her teling me - I've seen it when I'm in the shop and the assistant doesn't know I'm her mum. She asked about a specific items her and I had bought in that exact shop the week before and was told, "no, we don't sell those". I was there and heard it!
On the other hand, there are plenty of shops where assistants treat her the same as any one else.
She's only 10 and already there are stores she doesn't like because of this, and shops she loves because they are nice. Frankly, I think she'll be a Starbucks fan for life because she's always got super helpful friendly staff there! 
DS is a bit older but I asked him the other day why he always goes to the corner shop instead of the Co Op which is next door and he said it's because the guy has always been nice to him and he likes going in there while at Co Op they always act like a teenage boy is about to steal something!
Does anyone else notice this? or think that places that don't encourage their staff to be polite/friendly to young people are making a longer term mistake? Obviously, I am not blaming staff where children are rude or taking things and I guess there are some shops where they've experienced that such a lot they're just cynical about any child who comes in.
But it really frustrates me. I've spent years drilling my DC on how to ask for things politely, say please and thank you, wait their turn etc. I can see that they seem to be deploying those lessons. But they're not always getting the same respect back.