Hard drives and other storage mediums fail all the time, this is not hyperbole, these devices are not designed for 100% ever. The companies work on the assumption that if they fail they will offer a replacement within warrenty, but expecting to get data recovery for free is not reasonable.
If I was you I would spend a thousand dollars on getting the data off and never making the mistake of keeping important data on 1 storage medium again. Whenever I meet someone who has all their precious data on 1 device like this I tell them that you might as well just throw all that data away now, thats how much you care about it.
Sorry if it hurts dude, just spend the money to have the platters recovered individually and never make the mistake again.
They should have offered to replace your drive, but no more. Hardly unscrupulousness.
Edit, 4 years 10 months. Lacie merge in 2010
However, you should have backed up your stuff in more than one physical place and never assumed that the disk was entirely reliable.
Buy a quality drive enclosure and a quality hard disk, put them together yourself and make sure you have a half decent backup strategy.