Some very interesting comments and some good points, however ultimately as a paying customer the choice as to if I use them is down to myself, in this case I have decided to avoid EK when I can, I paid a lot of money for two business class seats and expect a decent service.
I see the point about cabin crew not having to open lockers, however I know some operators state in the cabin crew service manual that they should assist passengers with luggage if they need help, I am sure that is stated in the EK manual but happily be proved wrong.
I think at the end of the day as a customer you have to be satisfied and have legitimate expectation that your complaint would be treated seriously, there is no room for arrogance from a customer service team, the fact that EK will not discuss this any further or reply is enough for me to take my business elsewhere with a more service oriented airline.