Shoprite boycott

So fun fact today I went into ShopRite Ladybrand was in a hurry and forgot my savings card cashier tells me I must not forget my card as I will not be able to shop with them without it. Now if I were living in a place with options and not in a town that has Spar and Shoprite only it would not have bugged me but to be told that if you don't have your card you can't shop that is just no.