.....is really with the SD card manufacturer and not Samsung in this case. Your anger sounds misplaced to me. Samsung will not replace your SD card sold under a different brand name. I am not sure why you are convinced Samsung is to blame. SD cards are often the first thing to fail and not the phone itself in all likelihood.
I have purchased S7 edge around 45 days back and I was using the phone memory storage as main storage. Very rarely I was using the SD storage. 3 days back when I was trying to access the SD storage it was not visible at all. When I tried to ask the customer service they are saying that It was not their issue. They only issue the replacement for 7days from the purchase.
Really, Do they have mind which SD card will corrupt in 7 days?
I am totally disappointed. I will be recommending all my friends not to go with Samsung. This is last one I will be purchasing from Samsung. I really got annoyed. Even a local brands are better than this guys.