Honestly, some shops really don't know how to treat the customers properly. This happens when my dad wanted to buy a car, or even when my mom is out shopping for a new handbag. I mean, is it really that hard to smile, and answer questions politely?

Your job is based solely on human interaction am I right?
If for example, you treat your customers like shit, are they gonna be buying anything from you?

Not everybody knows what they want and what they need. In which consultation is key, though if you really can't help in such a trivial matter, why venture into business at all?

Judging through clothing is just stupid if I might say so.