I've had a culex Sapphire R9 290 suddenly die on me (it wasn't even a miner card, but the card for my main PC - which is filled with nothing but the most expensive, highest quality components possible).  Trying to get warranty repair is turning out to be a total PITA.

Has anyone else had to go through this, who may be able to help me through the process?

The want a receipt, and place of purchase.

I'm in Canada.

Thanks!