Hang on did you buy a KNC miner? It was priced in US Dollars, not BTC. If you paid in BTC you paid for the dollar value of the BTC at the time of purchase. If you decide to invest your dollars in something that generates BTC you can decide whether that generated income is valuable to you in BTC or in the dollar value of that BTC.
Yes I did and knew that I was cashing out my BTC for $7000 in USD which I was then then investing in the amount of BTC I predicted the Jupiter to make. It looks like my prediction was off because of the shipping delay and unexpected difficulty increases so I should have just held onto the BTC because my goal was to increase my BTC holdings since I predicted the BTC exchange rate would continue increasing. The fiat profit I made is a small consolation since I would have most likely made much more by NOT buying the Jupiter.
Thats why if you asked for a refund you wouldn't get the refund in the same amount of BTC you converted to pay for it, you would get the refund in the current number of BTC that equals the amount you paid for the device.
I've never asked for a refund and blame my miscalculation on the rising difficulty since I factored in a 1 month shipping delay in my calculations. I am very happy with KNC and do not blame them for the situation and only want people to realize the nature of investing in miners.
I only care about the BTC generated by my miner in as much as its value relative to the fiat I can convert it into eventually.
If you choose not to look at the results of your investment in mining to learn that buying BTC directly would have been a better investment then that is your choice but that is the fact.