In early January, we bought a new AEG dishwasher from Harvey Norman.

It has three racks, a lower and upper tray, plus a cutlery drawer. The installation and quick guide manual indicates that with the upper tray in its lower position, it can fit a 27cm dinner plate (this is considered a standard size). The problem is that it cannot. The upper arm hits the plates. Also, the upper tray being in this position means no wine glasses can be put in the dishwasher! 

The only real solution to this is removing the cutlery drawer, using a cutlery basket and keeping the upper tray in the higher position. The dishwasher is otherwise very good, but it's a pain to stack. 

I think this is unacceptable. Is this something that can be challenged and therefore returned and swapped?

Note, I have emailed their care department to confirm what they consider a standard-size dinner plate.