You've registered the fault and have a return number so surely there are options to get the unit 'serviced' and avoiding further contact with DSE, if you so decide?
But....
It may be only me but, there seem to be many threads across a variety of forums complaining about service and support from a whole bunch of retailers and their obligations under the CGA. Can they all be that poorly informed?
How often are issues associated with a single manufacturers products?
For any issue the retailer is the point of contact, and the easy target for carrying the can, where often the manufacturer needs to step out from behind their legalese and wear some tarnish on their brand.
I'd agree with this....
freitasm: It's under warranty. It shouldn't matter if it's sold out. If they can't replace it then they have to fix it.
I'd say it's Apple being a bad manufacturer there. Go after them, hard.