Your buy/sell is your own responsibility, many other groups also do their own buy calls. And many groups also have their own bad days. Don't have to highlight just one group and scream people scam. I notice there are other groups that have bad calls as well. If you have a personal vendetta I suggest you contact that group admin and settle this properly. Not by going public and shaming people. This is really a very bad action and it speaks a lot about your character.