Best thing you can do is if you get screwed... never ever ever ever shop with them again EVER!
And also don't buy that brand of product again ever. Even tell the global headquarters your experience and why you won't be recommending their products to people you know.
This is the sort of thing that winds me up about the goons at the retailers assn. lobbying the govt on online shopping tax.
I shop online and offshore out of frustration with nz based retailers. It is in my lifetime I have seen things change for the worse. I'm in my thirties. I want to shop locally but time and time again I get dry fisted.
Brick and mortar retailers will always have something the internet will never have. The ability to provide a brilliant pleasurable, personable and reliable shopping experience.
The 'level playing field' buzzword is a load of absolute bollocks it's always been a level playing field. Most NZ retailers simply can't be arsed using this to their advantage.
Also, the bosses need to nurture their young employees. One of the biggest gripes I hear is "...18 year old kid didn't know anything and didn't care". Of course they don't they're 18!
Find a way for them to find their crap job somewhat enjoyable. or at least take some sort of pride in some part of it.
I'm generalizing obviously and when I do get surprised by good service I make sure they know and also don't usually tip but if I do it's in cash to the person not the eftpos machine.