A few thoughts.
First, "destruction" implies severe physical damage. From the subject, I was expecting to read about the magic smoke being released from the card, or something along those lines. Nothing of the sort happened.
Next, as others have noted, the chances that this is the camera's fault are basically nonexistent. Zero? No, of course not. But the odds that even something like a cosmic ray caused the problem are far higher than the camera being to blame.
And, last, once a card has gone tits-up like this, I'd never trust it again. If I could get a refund or replacement, fantastic. If not, I'd just toss it, write it off, and move on. Part of the cost of the business.