However,this is what their "CS" looks like - rubbish.
The problem is people want a good "customer service" yet want the cheapest keys possible.
CD keys probably only has a handful of people dealing with CS requests as keeping their operating costs down means they can keep the prices low.
It almost seems like they have a problem on not blocking further sales when they run out of keys, seems they'd rather keep taking orders and then backfill them, but this obviously causes CS to become inundated with support requests from people who haven't got their keys.