正方超市停业前仍然买礼品卡,哪位知道如何追告讨回公道？谢谢。

正方超市停业前仍然卖礼品卡，哪位知道如何追告讨回公道？谢谢。
Square Supermarket selling gift card even though they are closing. Anybody knows how to sue them and get money back.
Thanks

联系我时，请说明是从洛杉矶华人生活网看到的，谢谢！