We could argue about this all day, but there's no point, it will achieve nothing, so this is my last post on the subject.
If a flash head going down caused your business to nearly shut down, then I have to assume that you had no redundancy - that's a dangerous strategy regardless of the type or make of equipment.
The reason that nothing was done with the light you returned is that no paperwork was included with it. All that we ask is that people enclose our returns form. If it isn't there then we can't identify the owner and can't deal with the problem.
From your description, it sounds like a blown capacitor. Those heads include a lot of capacitors and inevitably they can blow from time to time. Cheaply-made heads tend to have less capacitors.
We do what we can in terms of quality control, and are in the process of making massive improvements.
I honestly believe that we're doing OK on customer care. Most Companies our size aren't able to carry out repairs at all, we not only have a trained repairer, we now have a dedicated repair workshop too. And I think that I'm sat here doing this, long after most people have finished work, indicates my own commitment.
When you complained about me, Harry took over. I seem to remember that he moved heaven and earth to get that replacement head to you quickly, and at very high cost, but I don't know the details because, as I say, he took your complaint over. If you're not happy with the replacement, please ring him.