Trust me, the customer is not always right.
Whatever you do, never EVER get a job in retail.
Why is that?
Customers are not always right. Customers who THINK they are ALWAYS right are the worst kind. How you deal with this fact is what tells you whether you're cut out for a job in retail
In my line of work mate trust me if I piss off a customer they are not going to buy their Digitial camera elsewhere they would take a £500k order elsewhere. I have great relationships with my customers.