Cell C knows of an issue and wants customers to pay for it

So Cell C simcards crash when you do a required update on Samsung. All other simcards are fine. When I go to the store they want to charge me for a sim swop. 1. Cell C knows of this issue but does not tell their customers. 2. Although Cell C insists it's a Samsung issue, all other simcards are fine, it's only Cell C simcards that die, so it is OBVIOUSLY a Cell C issue, not a Samsung issue. 3. Cell C sold me the phone, Cell C knows of this issue, Cell C doesn't tell their customers, and when it happens, Cell C tells it's subscribers that we have to carry the cost????? I took a video of my interaction with your sales person, prepare to go viral